TWI402416B - Vehicle engine cooling structure - Google Patents

Description

Heat dissipation structure of vehicle engine

The present invention relates to a heat dissipation structure of a vehicle engine, and more particularly to a heat dissipation structure of an engine that reduces the temperature at which an idle speed of an engine changes from a low speed to a high speed.

According to the general vehicle 1, as shown in FIGS. 1 and 2, an engine 12 is suspended on the frame 11, and the engine 12 is provided with a stepless shifting system 2, which drives the stepless shifting system 2 by the crankshaft 121.

Referring to FIG. 2, the stepless transmission system 2 is configured to accommodate a belt shifting mechanism 21 in a gearbox 22. The belt shifting mechanism 21 includes a sliding plate 211 disposed on the crankshaft 121, and a crankshaft 211 disposed on the crankshaft 121. a driving plate 212 on the side of the sliding plate 211, a slanting plate 213 disposed on the crankshaft 121 and located on the other side of the sliding plate 211, and being restricted and accommodated in the sliding plate 211 and the inclined plate A weight ball 214 between the plates 213, a passive shaft 215 capable of transmitting power to the wheel, a passive disk 216 disposed on the passive shaft 215, a clutch 217 fixed to the driven shaft 215, and a transmission belt 218. The sliding plate 211 and the driving plate 212 form a driving disk of the belt shifting mechanism 21. One end of the transmission belt 218 is located between the driving plate 212 and the sliding plate 211, and the other end is located between the passive disk 216; the gearbox 22 is provided with an air inlet 221 and an exhaust port 222. The intake port 221 is provided with an intake duct 223, and the exhaust port 222 is provided with an exhaust duct 224.

In the combustion chamber 123 of the vehicle engine 12, the power generated by the explosion causes the piston 122 to reciprocate, thereby driving the crankshaft 121 to rotate, and the sliding plate 211 and the driving plate 212 rotate synchronously by sliding. The displacement of the disk 211, thus driving the speed of the passive disk 216, is accelerated, and the clutch 217 is used to drive the driven shaft 215 to increase the rotational speed, thereby increasing the traveling speed of the vehicle. At this time, the high heat generated during the operation of the belt shifting mechanism 21 is required to be cooled by the outside cold air from the intake duct 223 through the air inlet 221 into the gearbox 22, so that the parts in the belt shifting mechanism 21 are cooled, and the hot air is again The exhaust port 222 is exhausted to the outside through the exhaust duct 224 to prevent the belt shifting mechanism 21 from being damaged due to high temperature overheating.

It is known that the above-mentioned belt shifting mechanism 21 introduces cold outside air into the gearbox 22 of the engine 12 through the intake duct 223, and is directly discharged by the exhaust duct 224 after the belt shifting mechanism 21 is cooled, although the belt shifting mechanism 21 can be applied. The effect of cooling is generated; however, it is known that the hottest part of the vehicle 1 is the engine 12 itself, and the belt shifting mechanism 21 has no high temperature, so the high speed that the belt shifting mechanism 21 can generate is limited, that is, the belt shifting mechanism. The temperature that can be generated by 21 is far less than the high temperature of the engine 12. Therefore, how to effectively use the external cooling air after cooling the belt shifting mechanism 21 to further cool the engine 12 is an extremely problem to be solved by the vehicle manufacturer.

The main object of the present invention is to provide a heat dissipation structure for a vehicle engine. The vehicle is provided with an engine on the frame, and the engine is provided with a stepless transmission system. The stepless transmission system is provided with an intake duct in front and a rear portion. The exhaust duct is mainly characterized in that: the exhaust duct of the stepless shifting system is provided with a first extension pipe, which can discharge the cooling air after cooling the stepless shifting system to the engine, thereby reducing the engine The idle speed is changed from low speed to high speed, which can improve the efficiency of the engine.

A second object of the present invention is to provide a heat dissipation structure for a vehicle engine. The vehicle is provided with an engine on the frame, and the engine is provided with a stepless transmission system. The stepless transmission system is provided with an intake duct in front and a rear portion. An exhaust duct is disposed, and the exhaust duct is provided with a first extension tube and a second extension tube, and the first extension tube and the second extension tube are controlled by a valve control mechanism, and the control mechanism of the valve is controlled The cooling air after cooling the stepless transmission system is discharged from the first extension pipe or the second extension pipe, thereby improving the use efficiency of the cooling air after cooling the stepless transmission system.

In order to make it easier for the reviewing committee to understand the structure and the efficiencies of the present invention, the following description is provided as follows: First, referring to FIG. 3, the vehicle 3 of the present invention is provided with an engine 32 on the frame 31, the engine. 32 is provided with a stepless transmission system 4, wherein the construction and connection relationship between the engine 32 and the stepless transmission system 4 are the same as those used in the prior art, and therefore will not be described herein.

An intake duct 41 is disposed in front of the stepless transmission system 4, and an exhaust duct 42 is disposed behind the exhaust duct 42 to cool the outside cooling air of the stepless shifting system 4, and enters the stepless shifting system 4 by the intake duct 41 for cooling. The external air after cooling is discharged from the exhaust duct 42 behind the stepless transmission system 4, mainly because the exhaust duct 42 is provided with a first extension pipe 43, and the first extension pipe 43 is used for cooling. The cooling air after the stepless transmission system 4 is discharged to the exhaust pipe 321 of the engine 32 at the highest temperature, thereby obtaining the effect of cooling and cooling at the highest temperature exhaust pipe 321 of the engine 32, thereby increasing the use of the engine 32. life.

For the implementation of the present invention, as shown in FIG. 4, when the engine 32 of the vehicle 3 of the present invention is additionally connected to the generator 5 for household current, since the generator 5 is used, the engine 32 is in an idle state, that is, When the vehicle 3 is in a stopped state and the engine 32 is operating at an idle speed, the generator 5 is started to generate electricity. Therefore, the engine 32 is configured to enable the generator 5 to perform a normal power generation function. At this time, the engine 32 must increase the rotational speed at the idle speed. However, when the engine 32 is in the idle state, the overall heat dissipation of the engine 32 is the worst, and The generator 5 can play the normal power generation function and increase the rotation speed, which will undoubtedly cause serious damage to the engine 32, especially the high temperature generated at the exhaust pipe 321 is more serious; thereby, the first extension pipe 43 can be used The cooling air after cooling the stepless transmission system 4 is discharged to the highest temperature exhaust pipe 321 of the engine 32, thereby obtaining the effect of cooling and cooling at the highest temperature exhaust pipe 321 of the engine 32, thereby increasing the engine 32. The service life.

Referring to FIG. 5, FIG. 6 and FIG. 7, in the implementation, the first extension tube 43 and the second extension tube 44 may be disposed on the exhaust duct 42 , and the exhaust duct 42 , the first extension tube 43 and the The two extension tubes 44 are connected to each other. The first extension tube 43 and the second extension tube 44 are controlled to be opened and closed by a valve control mechanism 6; the valve control mechanism 6 has a control member 61, a control wire 62 and The control valve 63 is disposed on the engine 32. The control valve 63 is disposed at a position where the first extension tube 43 and the second extension tube 44 are in communication, whereby the control valve 63 can be disposed on the first extension tube 43. And switching between opening or closing between the second extension tubes 44, that is, the control duct 63 is used to make the exhaust duct 42 and the first extension tube 43 conductive, and the second extension tube 44 is closed, or the exhaust duct 42 is closed. The first extension tube 43 is turned on, and the first extension tube 43 is closed; the control member 61 and the control valve 63 are connected by the control wire 62, whereby the control valve 63 can be operated by the control member 61, Further, the cooling air after cooling the stepless shifting system 4 can be discharged by the first extension pipe 43 or the second extension pipe 44. The control member 61 is interlocked with the generator 5 externally connected to the engine 32, whereby the first extension tube 43, the second extension tube 44 and the generator 5 are disposed on the same side of the engine 32, so that the first facilitates the first The configuration of the extension pipe 43, the second extension pipe 44 and the generator 5; thereby, when the vehicle 3 is in the running state, since the heat dissipation system of the engine 32 effectively enables the engine 32 to obtain a good operating temperature, the driver can cool down The cooling air after the stepless transmission system 4 is directly discharged by the second extension pipe 44; however, when the vehicle 3 is in the stopped state, the driver uses the generator 5, the driver can drive the engine 32 by the control member 61. The externally coupled generator 5 is activated, and at the same time, by the control of the control member 61, the cooling air after cooling the stepless shifting system 4 is discharged from the first extension pipe 43 and cooled to the exhaust pipe 321 of the engine 32. Although the engine 32 is running at a high speed (because the generator 5 is driven), since the cooling air after cooling the stepless transmission system 4 can be cooled, a good heat dissipation effect can be obtained, thereby improving the cooling. Cooling air after stepless shifting system With efficiency.

The main function of the present invention is that the first extension tube 43 is disposed on the exhaust duct 42 of the stepless transmission system 4, and the cooling duct after cooling the stepless transmission system 4 is cooled by the first extension tube 43. To the highest temperature exhaust pipe 321 of the engine 32, thereby obtaining the effect of cooling and cooling at the highest temperature exhaust pipe 321 of the engine 32, thereby increasing the service life of the engine 32; The first extension tube 43 and the second extension tube 44 are disposed, and the first extension tube 43 and the second extension tube 44 are controlled by a valve control mechanism 6, thereby further improving the cooling after the stepless transmission system. The use of wind.

In summary, the heat dissipation structure of the vehicle engine of the present invention can effectively reduce the temperature at which the idle speed of the engine is changed from a low speed to a high speed, which has improved the efficiency of the user, and has become practical, progressive, and novel. The requirements, the application for invention patents in accordance with the law, pray for the detailed examination of the review committee, Huishou for the approval of the patent, to the sense of virtue.

1. . . vehicle

11. . . Frame

12. . . engine

121. . . Crankshaft

122. . . piston

123. . . Combustion chamber

2. . . Stepless shifting system

twenty one. . . Belt shifting mechanism

211. . . Sliding disk

212. . . Disk drive

213. . . Sloping plate

214. . . Counterweight ball

215. . . Passive axis

216. . . Passive disk

217. . . clutch

218. . . Transmission belt

twenty two. . . Gearbox

221. . . Air inlet

222. . . exhaust vent

223. . . Intake duct

224. . . Exhaust duct

3. . . vehicle

31. . . Frame

32. . . engine

321. . . exhaust pipe

4. . . Stepless shifting system

41. . . Intake duct

42. . . Exhaust duct

43. . . First extension tube

44. . . Second extension tube

5. . . generator

6. . . Valve control mechanism

61. . . Control

62. . . Control wire

63. . . Control valve

Figure 1 is a schematic diagram of the configuration of a conventional vehicle engine.

Figure 2 is a schematic diagram of a stepless shifting system.

Figure 3 is a schematic diagram of the configuration of the vehicle engine of the present invention.

Figure 4 is a schematic view showing a cooling embodiment of the stepless shifting system of the present invention.

Figure 5 is a schematic view of another embodiment of the present invention.

Figure 6. Schematic diagram of the operation of the seven-series control valve.

3. . . vehicle

31. . . Frame

32. . . engine

321. . . exhaust pipe

4. . . Stepless shifting system

41. . . Intake duct

42. . . Exhaust duct

43. . . First extension tube

Claims (6)

A heat dissipation structure of a vehicle engine, the vehicle is provided with an engine on the frame, the engine is provided with a stepless speed change system, the stepless speed change system is provided with an intake duct in front and an exhaust duct at the rear, which is characterized in that: The exhaust duct of the stepless transmission system is provided with a first extension pipe, which can discharge the cooling air after cooling the stepless transmission system to the engine, and the exhaust duct is further provided with a second extension pipe, the row The air conduit, the first extension tube and the second extension tube are in communication with each other, and a valve control mechanism is provided at the mutual communication, the valve control mechanism has a control member, a control wire and a control valve, and the control valve can be first Switching between the extension tube and the second extension tube for opening or closing. The heat dissipation structure of a vehicle engine according to claim 1, wherein the first extension pipe discharges the cooling air after cooling the stepless transmission system to the exhaust pipe of the engine. The heat dissipation structure of a vehicle engine according to claim 1, wherein the control member is disposed on the engine. The heat dissipation structure of a vehicle engine according to claim 1, wherein the control unit drives the control valve to close the second extension tube, the first extension tube is in communication with the exhaust duct, and at this time, the control The synchronization of the engine causes the engine to connect to a generator located outside the engine. The heat dissipation structure of a vehicle engine according to claim 1, wherein the first extension pipe and the generator are located on the same side of the engine. The heat dissipation structure of a vehicle engine as described in claim 1 The first extension tube, the second extension tube and the generator are located on the same side of the engine.