JP2005001544A - Accessory driving device for idling stop vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an accessory driving device for an idling stop vehicle which is simple and exhibits excellent idling stop properties. <P>SOLUTION: Rotation of a motor-driven compressor 4 is transmitted to an engine through a planetary gear mechanism 5 and an one-way clutch 18 to start the engine. Rotation of the engine is transmitted to the motor-driven compressor 4 through the one-way clutch 19 and the planetary gear mechanism 5 to release an electromagnetic clutch 3 when the engine is stopped and an air-conditioner is in operation. The motor-driven compressor is driven by the engine during normal traveling to serve as a generator for charging a battery. Thereby, a compact accessory driving device for an idling stop vehicle is realized. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an auxiliary drive device for an idle stop vehicle that realizes an engine start function, a power generation function, and an air conditioner function when the engine is stopped.
[0002]
[Prior art and problems to be solved by the invention]
In recent years, there has been a strong demand for a reduction in the space required for a vehicular accessory drive device provided in an engine room because of the demand for downsizing the vehicle engine room. Note that the vehicle accessory drive device referred to in this specification designates a device that realizes an engine start function, a power generation function, and an air conditioner function. In addition, in recent years, the number of so-called idle stop vehicles that stop the engine when idling is increasing. In this idle stop vehicle, a normal vehicle accessory drive device is equipped with a starter, an alternator, and an engine driven air conditioner compressor. In addition, it is expected that this air conditioner compressor can be electrically driven. For this reason, there is a problem that the required space for the auxiliary vehicle drive device for idle stop vehicles is larger than that of a normal vehicle against the above-described reduction demand. For this reason, for example, the following vehicle accessory drive device technologies are known.
[0003]
Patent Document 1 discloses a vehicular accessory drive device (hereinafter also referred to as a hybrid compressor) in which a compressor shaft for an air conditioner and a motor shaft are directly connected, and further, the motor shaft is coupled to a crank pulley via a pulley with an electromagnetic clutch and a belt. is suggesting. In this device, when the engine is stopped during idling, the electromagnetic clutch is disconnected and the air conditioner compressor is electrically driven by the motor to maintain the air conditioning. Accordingly, the auxiliary drive device for an idle stop vehicle using this hybrid compressor is composed of three units, a starter, an alternator and a hybrid compressor, as in a normal vehicle.
[0004]
However, in this device, since the hybrid compressor has an electromagnetic clutch and a compressor drive motor, the required space and weight are further increased as compared with a vehicle auxiliary machine drive device for a normal vehicle, and the number of parts including the control circuit is increased. It has the disadvantage that it increases considerably.
[0005]
Patent Document 2 proposes to use the hybrid compressor of Patent Document 1 as a starter for starting the engine. Thereby, since a starter can be abbreviate | omitted, the required space, weight, and number of parts of a vehicle auxiliary machine drive device can be reduced rather than the apparatus of patent document 1.
[0006]
However, in this hybrid compressor for starter, it is necessary to set the diameter of the motor pulley to be very small with respect to the diameter of the crank pulley in order to obtain the engine starting torque. As a result, when the compressor is driven by the engine, the compressor rotation speed (= The motor rotation speed) becomes very high and exceeds the allowable maximum rotation speed of the compressor, which is difficult to realize. Furthermore, since the device of Patent Document 2 also requires a large-sized hybrid compressor and alternator, this idle stop vehicle accessory drive device is a vehicle supplement for a normal vehicle including a compressor, a starter, and an alternator. The required space could not be reduced much compared to the machine drive device.
[0007]
Patent Document 3 discloses a starter, an alternator, a pulley (MG pulley) provided in one motor generator (motor generator, MG) that operates as a compressor drive motor, a pulley with a one-way clutch mounted on a crankshaft, A device that belt-couples a pulley (compressor pulley) provided in an air conditioner compressor is proposed.
[0008]
According to this device, the required number of rotating electrical machines can be reduced. However, since it is necessary to separately arrange an air conditioner compressor and an MG, auxiliary vehicle driving for a normal vehicle including a compressor, a starter, and an alternator is performed. The required space could not be reduced much compared to the device. Further, as a result of having to increase the reduction ratio in order to obtain torque when the MG is operated as a starter, when the alternator is driven, the problem arises that the rotational speed of the MG exceeds the allowable rotational speed. .
[0009]
The present invention has been made in view of the above-described problems, and an object of the present invention is to provide an idle stop vehicle accessory driving device that is simple and excellent in space saving.
[0010]
[Patent Document 1] JP-A-2000-229516
[Patent Document 2] JP-A-2002-205538
[Patent Document 3] US5896750
[0011]
[Means for Solving the Problems]
According to a first aspect of the present invention, there is provided a clutch mechanism that is connected to an engine that performs idle stop and is released when the air conditioner is operating when the engine is stopped, and a motor generator and an air conditioner compressor that are connected to respective shafts. A compressor, and a speed change mechanism that is housed in a housing together with the electric compressor and connects the rotation shaft of the clutch mechanism and the rotation shaft of the electric compressor,
When the transmission mechanism defines the ratio of the rotational speed Nc of the electric compressor to the rotational speed Ne of the rotating shaft of the clutch mechanism as a transmission ratio (= Nc / Ne), the motor generator drives the engine. A speed ratio changing mechanism for setting an engine start speed ratio, which is the speed ratio in the case, larger than an engine rotation speed ratio, which is the speed ratio when the electric compressor is driven by the engine. It is characterized by.
[0012]
That is, according to the present invention, the motor generator to which the compressor is connected and the clutch mechanism connected to the engine are connected by the speed change mechanism whose speed ratio changes depending on the operation mode. The operation mode here includes an engine start mode in which the motor generator starts the engine and an engine rotation mode in which the engine drives the motor generator and the compressor. As a result, the gear ratio in the engine start mode is set large, the torque of the motor generator is greatly multiplied and transmitted to the engine, and conversely, when the engine drives the compressor or motor generator, it is relatively small. It is possible to prevent the compressor or the motor generator from exceeding its maximum allowable rotational speed by the high speed engine. Furthermore, since the compressor, the motor generator, and the speed change mechanism are integrated by the housing, the required space for the idle stop vehicle accessory drive device in the engine space can be greatly reduced, and the number of parts can also be reduced. .
[0013]
An electromagnetic clutch is suitable as the clutch mechanism, but a mechanical clutch such as a hydraulic clutch may be used. The clutch mechanism may be a pulley built-in type. The compressor of the electric compressor and the motor generator may be directly connected or may be connected via a clutch.
[0014]
According to a second aspect of the present invention, in the auxiliary drive apparatus for an idle stop vehicle according to the first aspect, the clutch mechanism is an electromagnetic clutch built in a pulley. In this way, the apparatus can be configured compactly.
[0015]
According to a third aspect of the present invention, in the auxiliary drive apparatus for an idle stop vehicle according to the first or second aspect, the electric compressor further includes a motor generator and an air conditioner compressor, each rotating shaft being directly connected or common. It is characterized by that. If it does in this way, an electric compressor can be constituted compactly.
[0016]
According to a fourth aspect of the present invention, in the idle stop vehicle accessory driving device according to any one of the first to third aspects, the transmission mechanism further includes a planetary gear mechanism, a first shaft of the planetary gear mechanism, and the clutch mechanism. A first one-way clutch disposed between the rotating shaft and a second one-way clutch disposed between the second shaft of the planetary gear mechanism and the rotating shaft of the clutch mechanism. The first one-way clutch is engaged when the engine is started, and is released when the electric compressor is driven by the engine, and the second one-way clutch is released when the engine is started, and the electric It is characterized by being connected when the compressor is driven. These two one-way clutches constitute a gear ratio changing mechanism. In this way, the transmission ratio switching type transmission mechanism can be configured in a compact manner.
[0017]
According to a fifth aspect of the present invention, in the auxiliary drive apparatus for an idle stop vehicle according to the fourth aspect, the speed change mechanism is disposed between the electromagnetic clutch and the electric compressor, and the sun gear shaft of the speed change mechanism is provided. The rotating shaft of the electromagnetic clutch and the rotating shaft of the electric compressor are arranged on the same axis.
[0018]
According to a sixth aspect of the present invention, in the idle stop vehicle accessory driving apparatus according to the fifth aspect, the shaft of the electric compressor is connected to or integrated with the sun gear shaft,
A carrier shaft of the planetary gear mechanism is coupled to the rotating shaft of the electromagnetic clutch through the first one-way clutch, and a sun gear shaft of the planetary gear mechanism is coupled to the rotating shaft of the electromagnetic clutch through the second one-way clutch. It is characterized by being. In this way, the apparatus can be configured compactly.
[0019]
According to a second aspect of the present invention, there is provided a clutch mechanism that is connected to an engine that performs idle stop and is released when an air conditioner is operating when the engine is stopped, an electric generator having a motor generator and an air conditioner compressor that are connected to respective shafts. A compressor, and a speed change mechanism that is housed in a housing together with the electric compressor and connects a rotating shaft of a pulley for driving the engine and a rotating shaft of the electric compressor,
The transmission mechanism drives the engine by the motor generator when the ratio of the rotational speed Nc of the electric compressor to the rotational speed Ne of the rotating shaft of the clutch mechanism is defined as a transmission ratio (= Nc / Ne). A gear ratio changing mechanism for setting an engine start speed ratio, which is the speed ratio in the case, larger than an engine rotation speed ratio, which is the speed ratio when the electric compressor is driven by the engine;
The clutch mechanism is engaged when the electric compressor rotates in the first direction to transmit and receive torque with the engine, and is released when the electric compressor rotates in the direction opposite to the first direction. Consisting of a one-way clutch,
The electric compressor is driven in a direction opposite to the first direction when the air conditioner compressor is driven by the motor generator when the engine is stopped.
[0020]
The idle stop vehicle accessory drive apparatus according to the second aspect of the invention is a simple alternative to the clutch mechanism capable of joint-release control used in the idle stop vehicle accessory drive apparatus of the first aspect of the invention. When a simple one-way clutch is employed and the electric compressor is driven when the engine is stopped, the feature is that the electric compressor is driven in a direction opposite to that during engine rotation. In this way, even if the clutch mechanism such as an electromagnetic clutch is not controlled to release, the third one-way clutch rotates from the electric compressor to the engine by rotating the electric compressor in reverse when driving the air conditioner when the engine is stopped. In order to cut off the transmission, the device configuration and reliability can be improved, and a reduction in size and weight and a reduction in space can be realized.
[0021]
According to an eighth aspect of the present invention, in the idle stop vehicle accessory driving apparatus according to the seventh aspect, the transmission mechanism includes a planetary gear mechanism, a carrier of the planetary gear mechanism, and a rotation shaft of the pulley. A first one-way clutch disposed, and a second one-way clutch disposed between a sun gear of the planetary gear mechanism and a rotation shaft of the pulley. The second one-way clutch is disengaged when the engine is started, and is engaged when the electric compressor is driven by the engine. . In this way, the gear ratio changing mechanism can be realized with a simple configuration.
[0022]
According to a ninth aspect of the present invention, in the auxiliary drive apparatus for an idle stop vehicle according to the eighth aspect, the third one-way clutch is disposed between a ring gear and a housing of the planetary gear mechanism. To do. In this way, the third one-way clutch can be realized with a simple configuration. When the first one-way clutch and the second one-way clutch are both released during reverse rotation of the electric compressor, it is not necessary to provide the third one-way clutch between the ring gear and the housing. The first and second one-way clutches can also serve as the third one-way clutch referred to in the present invention.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
A preferred embodiment of the auxiliary drive apparatus for an idle stop vehicle according to the present invention will be described with reference to the following embodiments.
[0024]
[Example 1]
Example 1 will be specifically described with reference to FIG.
[0025]
(Description of structure)
Reference numeral 1 denotes an auxiliary machine drive device according to the present invention, in which power is transmitted sequentially from a not-shown engine that is stopped during idling via a crank pulley (not shown) and a belt (not shown).
[0026]
Reference numeral 2 denotes a control device for controlling the auxiliary machine drive device 1, which supplies DC power fed from a battery (not shown) to the auxiliary machine drive device 1 and rectifies the generated power of the vehicle auxiliary machine drive device. A circuit for transmitting power to the battery is incorporated. Further, the control device 2 sets the operation mode of the auxiliary drive device 1 based on information from an internal combustion engine control device (not shown), an air conditioner control device (not shown), etc., as a starter mode, an alternator mode, an electric compressor mode, and an internal combustion mode. The engine drive compressor mode is set, and the accessory drive device 1 is controlled based on the set mode. The control device 2 is a normal microcomputer control device, but since the configuration of the microcomputer control device is general, a detailed description thereof will be omitted. Further, since the operation mode selection operation of the control device 2 is not the gist of the present invention, detailed description thereof is omitted.
[0027]
The structure of the accessory drive device 1 will be described in detail below.
[0028]
The accessory driving device 1 includes an electromagnetic clutch 3, an electric compressor 4, an electromagnetic clutch (clutch mechanism) 3, and a planetary gear mechanism (transmission mechanism) 5 disposed between the electric compressor 4.
[0029]
The electromagnetic clutch 3 is housed inside the pulley 60 in the radial direction to form a so-called pulley built-in type electromagnetic clutch (pulley with electromagnetic clutch), and the pulley 60 is connected to an engine crank pulley through a belt (not shown) so as to be able to transmit and receive torque. ing. The coil 3c and the yoke 3y of the electromagnetic clutch 3 are fixed to the front part of a front bracket 11a described later. Since the pulley built-in electromagnetic clutch itself is well known, detailed description thereof is omitted.
[0030]
The electric compressor 4 includes a motor unit (motor generator) 6 and a compressor unit (air conditioner compressor) 7 disposed in front of the motor unit 6. The motor unit 6 and the compressor unit 7 have a common rotating shaft 8. The rotary shaft 8 is rotatably supported by a rear housing 9 and a front housing 11 that are integrated with each other through a center housing 10. The motor unit 6 is a three-phase synchronous machine, and the compressor unit 7 is a variable displacement swash plate compressor such as a wobble type. These three-phase synchronous machines and variable displacement swash plate compressors are well known, and the details The detailed explanation is omitted. Of course, other known formats may be adopted as the motor unit 6 and the compressor unit 7. The rotating shaft 8 protrudes forward from the front housing 11.
[0031]
The planetary gear mechanism 5 is accommodated between the front housing 11 and a front bracket 11 a fastened to the front end surface of the front housing 11. The planetary gear mechanism 5 includes a sun gear 12 fitted and fixed to a portion of the rotary shaft 8 protruding from the front housing 11, a planetary gear 13 that meshes with the sun gear 12, and a ring gear 14 that meshes with the planetary gear 13. is doing. The planetary gear 13 is rotatably supported by a pin 15, and the pin 15 is fixed to a carrier 16. The carrier 16 has a hole portion into which the rear end portion of the rotary shaft 17 of the electromagnetic clutch 3 is fitted, and a first one-way clutch 18 is provided between the inner peripheral surface of the hole portion and the outer peripheral surface of the rotary shaft 17. It has been. The rear end surface of the rotating shaft 17 has a hole portion into which the front end portion of the rotating shaft 8 is fitted, and a second one-way clutch 19 is provided between the inner peripheral surface of the hole portion and the outer peripheral surface of the rotating shaft 8. Is provided. The rotating shaft 17 is rotatably supported by the front bracket 11a. Since the structure of the planetary gear mechanism 5 excluding the one-way clutches 18 and 19 is well known, a detailed description thereof will be omitted. The one-way clutches 18 and 19 constitute a transmission ratio changing mechanism as referred to in the present invention, but the structure of the one-way clutches 18 and 19 is also well known, and thus detailed description thereof is omitted. In the planetary gear mechanism 5 of this embodiment, the ring gear 14 is fixed to the front housing 11.
[0032]
(Description of operation)
The operation of this idle stop vehicle accessory driving device will be described below with reference to the operation mode diagram shown in FIG.
[0033]
(Starting mode)
For example, in order to start the engine to start the vehicle from an idle stop, a start (starter) mode is performed.
[0034]
In this start mode, the electromagnetic clutch 3 is turned on and the motor unit 6 is driven. Of course, the rotation direction of the motor unit 6 is a direction in which the engine is normally rotated. At this time, it is preferable to minimize the refrigerant flow rate so as to minimize the load torque of the compressor unit 7, but this is not the gist of this embodiment, and thus the description thereof is omitted.
[0035]
Due to the rotation of the motor unit 6, the sun gear 12 rotates, the planetary gear 13 revolves while rotating, and the carrier 16 rotates in a predetermined direction according to the revolution of the planetary gear 13. This rotation of the carrier 16 is transmitted to the rotating shaft 17 of the electromagnetic clutch 3 through the engaged first one-way clutch 18, and since the electromagnetic clutch 3 is engaged, torque is transmitted from the pulley 6 to the engine. The At this time, since the rotational speed of the rotary shaft 8 is larger than the rotational speed of the rotary shaft 17, the second one-way clutch 19 is in a released state, and between the sun gear 12 and the rotary shaft 17 through the second one-way clutch 19. Torque exchange is blocked.
[0036]
(Electric air conditioner mode)
When the air conditioner is operated when the engine is stopped, the electric air conditioner mode described below is performed.
[0037]
In this electric air conditioner mode, the electromagnetic clutch 3 is turned off and the motor unit 6 is driven. The rotation direction of the motor unit 6 is a direction in which the engine is normally rotated, as in the start mode.
[0038]
By the rotation of the motor unit 6, the compressor unit 7 performs a refrigerant gas compression operation. Description of the operation of the compressor unit 7 is omitted. The sun gear 12 rotates, and the planetary gear 13 rotates and revolves along with it, and the carrier 16 rotates in a predetermined direction according to the revolution of the planetary gear 13. This rotation of the carrier 16 is transmitted to the rotating shaft 17 of the electromagnetic clutch 3 through the engaged first one-way clutch 18, but torque is transmitted from the pulley 6 to the engine because the electromagnetic clutch 3 is released. Not. As a result, the motor unit 6 can drive only the compressor unit 7 to perform the air conditioner operation.
[0039]
(Power generation / air conditioner mode)
After the rotation of the engine is stabilized, a power generation / air conditioner mode for performing a power generation operation or an air conditioner operation is performed.
[0040]
In this power generation / air conditioner mode, the electromagnetic clutch 3 is turned on, and the motor unit 6 is in a power generation operation. In order to make the motor unit 6, which is a synchronous machine, perform power generation operation, an inverter built in the control device 2 that drives the motor unit 6 may be operated for power generation rectification. Such a power generation rectification operation itself is not the gist of the present invention, and thus the description thereof is omitted.
[0041]
More specifically, when the rotational speed of the rotary shaft 17 increases due to the engine rotational speed exceeding a predetermined threshold value and becoming a high rotational speed, the second one-way clutch 19 between the rotary shaft 17 and the rotary shaft 8 is The joint state is established, and torque is transmitted from the rotating shaft 17 to the rotating shaft 8. At this time, since the rotating shaft 17 rotates at a higher speed than the wheel plate 16, the first one-way clutch 18 between them is released, and torque transmission from the rotating shaft 17 to the carrier 16 is prevented.
[0042]
(Example effect)
That is, when the engine is started, the second one-way clutch 19 is in a released state because the rotary shaft 8 is rotating faster than the rotary shaft 17. For this reason, since the rotational speed of the rotating shaft 17 is low, the torque of the motor unit 6 is increased through the rotating shaft 8, the sun gear 12, the planetary gear 13, the carrier 16, the first one-way clutch 18, the rotating shaft 17, and the electromagnetic clutch 3. 6 is transmitted.
[0043]
Thereafter, if the engine speed increases sufficiently, the rotation shaft 17 reaches the rotation speed of the rotation shaft 8 so that the second one-way clutch 19 is engaged, and the rotation speed of the rotation shaft 17 is the rotation of the wheel plate 16. Therefore, the first one-way clutch 18 is in a disengaged state. For this reason, the torque of the pulley 6 is transmitted to the compressor unit 7 and the motor unit 6 through the electromagnetic clutch 3, the rotating shaft 17, the sun gear 12, and the rotating shaft 8, and an air conditioner operation and a power generation operation are performed. Accordingly, it is possible to prevent excessive increase in the rotational speed of the compressor unit 7 and the motor unit 6 while securing a large engine starting torque. Moreover, the electric air-conditioner operation at the time of idling stop can be realized by releasing the electromagnetic clutch 3.
[0044]
[Example 2]
Example 2 will be described in detail with reference to FIG. FIG. 3 is a drawing in which the electromagnetic clutch 3, that is, the electromagnetic clutch with a built-in pulley is omitted from FIG. 1.
[0045]
(Description of structure)
The auxiliary drive device 1 of this embodiment is the same as the auxiliary drive device 1 shown in FIG. 1, except that the electromagnetic clutch 3 is changed to a simple pulley (not shown), and the ring gear 14 of the planetary gear mechanism 5 is changed to the third one-way. It is fixed to the inner peripheral surface of the front housing 11 through the clutch 20.
[0046]
(Description of operation)
The third one-way clutch 20 is engaged to prevent the idle rotation of the ring gear 14 when the electric compressor 4 rotates in the forward direction, that is, at the time of engine start rotation or power generation after the engine start, or the rotation direction during air conditioner operation. Thereby, engine starting, power generation, and air-conditioner driving by the engine are performed in the same manner as in the first embodiment.
[0047]
Next, the driving operation of the compressor unit 7 by the motor unit 6 when the engine is stopped will be described. The compressor unit 7 employs a variable displacement type that normally compresses the refrigerant gas regardless of the rotation direction, the motor unit 6 rotates in the reverse direction, and the compressor unit 7 also rotates in the reverse direction. This causes the sun gear 12 to rotate in the opposite direction, so that the ring gear 14 tries to rotate in the opposite direction, but the third one-way clutch 20 is thereby released, so that the ring gear 14 rotates freely and is not Torque is not transmitted to the rotating shaft of the illustrated pulley.
[0048]
(Modification)
In the above embodiment, the third one-way clutch 20 is disposed between the ring gear 14 and the front housing 11. However, the third one-way clutch 20 may be at a position where torque is not transmitted to a pulley (not shown) during reverse rotation. It can be placed anywhere.
[0049]
(Modification)
In the above embodiment, the third one-way clutch 20 is disposed between the ring gear 14 and the front housing 11, but the first one-way clutch 18 and the second one-way clutch are in reverse rotation of the rotating shaft 8 and the sun gear 12. 19 is released, the third one-way clutch 20 can be omitted, and the first one-way clutch 18 and the second one-way clutch 19 can also be used as the third one-way clutch in the present invention. Therefore, further structural simplification can be realized.
[0050]
(Modification)
In the above embodiment, the first one-way clutch 18 and the second one-way clutch 19 are individually arranged between the rotation shaft of the pulley (not shown) and the sun gear 12 and the planetary gear 13, but the same function is achieved. If there is, it may be arranged in another part of the planetary gear mechanism 5.
[Brief description of the drawings]
FIG. 1 is an axial sectional view showing Embodiment 1 of the present invention.
2 is an operation mode diagram of the apparatus of FIG.
FIG. 3 is an axial sectional view showing a second embodiment of the present invention.
[Explanation of symbols]
1 Auxiliary machine drive device 2 Control device 3 Electromagnetic clutch (clutch mechanism)
4 Electric compressor 5 Planetary gear mechanism 6 Motor part (motor generator)
7 Compressor (air conditioner compressor)
8 Rotating shaft of electric compressor 9 Rear housing 10 Center housing 11 Front housing 11a Front bracket 12 Sun gear 13 Planetary gear 14 Ring gear 15 Pin 16 Carrier 17 Rotating shaft of electromagnetic clutch 18 First one-way clutch 19 Second one-way clutch 20 Third One-way clutch

Claims (10)

A clutch mechanism that is connected to an engine that performs idle stop and is released when the air conditioner is operating when the engine is stopped;
An electric compressor having a motor generator and an air conditioner compressor, each of which is connected to a shaft;
A speed change mechanism that is housed in a housing together with the electric compressor and connects the rotating shaft of the clutch mechanism and the rotating shaft of the electric compressor;
With
The transmission mechanism is
When the ratio of the rotational speed Nc of the electric compressor to the rotational speed Ne of the rotating shaft of the clutch mechanism is defined as a gear ratio (= Nc / Ne),
An engine start speed ratio that is the speed ratio when the engine is driven by the motor generator is set to be larger than an engine speed speed ratio that is the speed ratio when the electric compressor is driven by the engine. An auxiliary drive device for an idle stop vehicle, characterized by having a gear ratio changing mechanism. The auxiliary drive apparatus for an idle stop vehicle according to claim 1,
The clutch drive mechanism comprises an electromagnetic clutch built in a pulley, and is an auxiliary drive device for an idle stop vehicle. In the auxiliary drive apparatus for idle stop vehicles according to claim 1 or 2,
The electric compressor includes a motor generator and an air conditioner compressor, each of which has a rotating shaft directly connected or shared, and an auxiliary drive device for an idle stop vehicle. In the auxiliary drive apparatus for idle stop vehicles in any one of Claims 1 thru | or 3,
The transmission mechanism is
A planetary gear mechanism,
A first one-way clutch disposed between the first shaft of the planetary gear mechanism and the rotating shaft of the clutch mechanism; and a second shaft of the planetary gear mechanism and the rotating shaft of the clutch mechanism. A second one-way clutch arranged;
Have
The first one-way clutch is engaged when the engine is started, and is released when the electric compressor is driven by the engine.
The second one-way clutch is released when the engine is started and is engaged when the electric compressor is driven by the engine. In the auxiliary drive apparatus for idle stop vehicles according to claim 4,
The transmission mechanism is disposed between the electromagnetic clutch and the electric compressor, and the sun gear shaft of the transmission mechanism, the rotating shaft of the electromagnetic clutch, and the shaft of the electric compressor are disposed on the same axis. An auxiliary drive device for an idle stop vehicle, characterized in that In the auxiliary drive apparatus for idle stop vehicles according to claim 5,
The shaft of the electric compressor is connected to or integrated with the sun gear shaft,
A carrier shaft of the planetary gear mechanism is coupled to a rotating shaft of the electromagnetic clutch through the first one-way clutch,
A sun gear shaft of the planetary gear mechanism is coupled to a rotating shaft of the electromagnetic clutch through the second one-way clutch. A clutch mechanism that is connected to an engine that performs idle stop and is released when the air conditioner is operating when the engine is stopped;
An electric compressor having a motor generator and an air conditioner compressor, each of which is connected to a shaft;
A speed change mechanism that is housed in a housing together with the electric compressor and connects a rotating shaft of a pulley for driving an engine and a rotating shaft of the electric compressor;
With
The transmission mechanism is
When the ratio of the rotational speed Nc of the electric compressor to the rotational speed Ne of the rotating shaft of the clutch mechanism is defined as a gear ratio (= Nc / Ne),
An engine start speed ratio that is the speed ratio when the engine is driven by the motor generator is set to be larger than an engine speed speed ratio that is the speed ratio when the electric compressor is driven by the engine. Having a gear ratio changing mechanism,
The clutch mechanism is
A third one-way clutch that is engaged when the electric compressor rotates in the first direction to transfer torque to and from the engine, and is released when the electric compressor rotates in a direction opposite to the first direction;
The electric compressor is
An auxiliary drive apparatus for an idle stop vehicle, which is driven in a direction opposite to the first direction when the motor generator is driven by the motor generator when the engine is stopped. In the auxiliary drive apparatus for idle stop vehicles according to claim 7,
The transmission mechanism is
A planetary gear mechanism,
A first one-way clutch disposed between the carrier of the planetary gear mechanism and the rotating shaft of the pulley; and a second one-way clutch disposed between the sun gear of the planetary gear mechanism and the rotating shaft of the pulley. When,
Have
The first one-way clutch is engaged when the engine is started, and is released when the electric compressor is driven by the engine.
The second one-way clutch is released when the engine is started and is engaged when the electric compressor is driven by the engine. The auxiliary drive apparatus for an idle stop vehicle according to claim 8,
The third one-way clutch is disposed between a ring gear and a housing of the planetary gear mechanism, and is an auxiliary drive device for an idle stop vehicle. In the auxiliary drive apparatus for idle stop vehicles according to claim 7,
An auxiliary drive apparatus for an idle stop vehicle, wherein the compressor comprises a variable capacity compressor.

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