TWI252275B - Arrangement of the fuel injection device of scooters - Google Patents

Abstract

The present invention relates to an arrangement of the fuel injection device of scooters. The fuel injection device is installed on the cylinder head, and the fuel pressure regulator is arranged inside the fuel injection device. The mixed gas nozzle of the fuel injection device is installed toward to the combustion chamber of the cylinder head. The spark plug is installed toward to the fan cover. By the arrangement that the spark plug is installed in the cooling air passage formed by the fan cover and engine cover, and the fuel inlet and the fuel outlet of the fuel injection device are opposite to the spark plug, the assembly convenience of the fuel injection device and the operation safety of the engine can be achieved.

Description

1252275 V. Description of invention (1)

[Technical Field According to the Invention] The present invention relates to a configuration in which the fuel injection device can be configured to have a safety and safety. And the convenience of 'establishment' and ensure that the engine is [previous technology] press, the general vehicle 祚 ", ^ is the introduction of fresh air and two! Two:: type J ..., etc., is the shaft drive belt shifter = Into the piston: reciprocating motion, through the use of the martial art to use the carburetor to enter: 1 for the purpose of the purpose. 擎1, please refer to Figure 1, the main I you A a respect η γ see illegal car Destined to strike 9 hearts mainly in the outer sleeve of the 挲 1 set a hood 盍 2 'Using the crankshaft 1 5 cool 鹛 sticky, human & sulfur p 4 ρ + η π Η丨 Μ Μ flat 3 wood ▼ cold The fan 16 generates a cooling air vent, so that the engine is cooled, and the hood 2 is used to prevent the cold part of the cooling engine from leaking out, and the noise generated when the engine is operated is reduced, and the hood 2 and the engine 1 are additionally A hole 2 1 is opened at the center of the upper end, and a spark plug (ie, an ignition device) ii can be received through the hole and screwed to the outside of the engine to introduce fresh air into the carburetor (not here, After mixing with gasoline to form oil and gas, it will enter the cylinder 13 through the inlet port 12, and the ignition of the oil spark plug 1 1 will cause the explosion. Thus, the piston is actuated to generate power, and the exhaust gas is exhausted by the exhaust port 14. This structure has been used by the locomotive manufacturer's, and it has indeed achieved the purpose of generating power, and at the same time, because the engine cover 2 has a hole. 2 1 , and the Mars plug 1 1 is fixed by the screwing method. Therefore, the hole 2 1 can provide the screwing and unscrewing of the spark plug 1 1 for maintenance and replacement operations, but using the carburetor two-stroke engine Locomotive combustion

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Page 5 1252275 V. Description of the invention (2) Incomplete, it will cause pollution increase, so it is devoted to the research and development of the Scooter jet engine locomotive. However, setting the jet engine on the Scooter locomotive has its need to overcome. Difficulties, how to set up the fuel injection device to achieve the convenience of assembly, and to ensure the safety of the engine, is still a problem that the locomotive must solve in the development of the two-stroke jet engine. SUMMARY OF THE INVENTION The main object of the present invention is to provide a configuration of a fuel injection device for a skeletal locomotive, which is mainly provided with a fuel injection device disposed on a cylinder head and a fuel pressure regulator disposed in the fuel injection device. The fuel injection nozzle of the fuel injection device is disposed toward the combustion chamber of the cylinder head, and the spark plug is disposed toward the fan cover side, and the spark plug is disposed on the cooling air passage formed by the fan cover and the hood, and the fuel is The inlet and outlet pipes of the injection device are arranged in the opposite direction of the spark plug, so that the fuel injection device can be assembled and convenient, and the safety of the engine is ensured. [Embodiment] In order to make it easier for the reviewing committee to understand the structure of the present invention and the efficiencies that can be achieved, the following is a description of the following: First, please refer to FIG. 2, which is a two-stroke jet engine of the present invention, mainly driven by an engine. 3; a fuel injection device 4 comprising: a cylinder 3 1 , a crankcase 3 2 and an ignition device 3 3 (ie, a spark plug), etc., wherein the engine 3 is sleeved with a hood a cover 30, the upper part of the cylinder 3 1 is a cylinder head 3 1 1 , and a cylinder 3 1 is provided with a piston 3 1 2 for reciprocating in a cylinder 3 1 , the cylinder head 31 1 having a mixed oil and gas combustion The combustion chamber 3 1 3 . The crankcase 3 2 is provided

1252275 V. INSTRUCTION DESCRIPTION (3) A crankshaft 3 2 1 is provided. The crankshaft 3 2 1 is connected to the piston 3 1 2 by a connecting rod 3 2 2 to convert the reciprocating motion of the piston 3 1 2 into a crankshaft 3 2 1 Rotating motion, and driving the cooling fan 3 2 3 to generate cooling air, the cooling fan 3 2 3 is externally provided with a fan cover 3 2 4, the cooling wind generated by the cooling fan 3 2 3 cools the engine 3, and utilizes the hood cover 30 prevents the cooling air of the cooling engine 3 from leaking out. The ignition device 33, that is, the spark plug, is disposed on the cylinder head 31, and mainly emits a spark to ignite the mixed oil and gas in the combustion chamber 3 1 3 of the engine 3, wherein the spark plug 3 3 is located in the fan cover 3 2 4 and the cooling air passage formed by the hood cover 30. The fuel injection device 4 is disposed on the cylinder head 31 and is externally provided with an outer cover 40, and the fuel injection device 4 has a fuel inlet 4 1 for allowing fuel to enter, and a self-fuel inlet 4 1 The incoming fuel is injected into the fuel nozzle 4 2 in the premixing chamber 46, a high pressure air inlet 43 that supplies high pressure air into the fuel injection device 4, and a fuel outlet 4 4 that allows excess pressure fuel to be discharged. When the fuel enters and the pressure is too high, the fuel pressure can be adjusted to be discharged from the fuel outlet 44. The fuel pressure regulator 4 5 is disposed in the fuel injection device 4 to mix the fuel and the high pressure air into the premixing chamber 4 6 . The mixed gas nozzle 4, which is sprayed into the combustion chamber 3 1 3, is connected to the signal connector 4 8 of the electronic control unit 8, wherein the fuel inlet 4 1 and the fuel outlet 4 4 of the fuel injection device 4 are directed toward Mars plug 3 3 is set in the opposite direction. Referring to FIG. 3, it is an operation state diagram of the present invention. As shown in the figure, the two-stroke injection engine of the present invention has an air supply engine 3

1252275 V. INSTRUCTION DESCRIPTION (4) Intake device 5 1 , a throttle valve 5 2 disposed in the intake device 5 1 and restricting air flow into the engine 3 , a throttle valve sensing the opening of the throttle valve 5 2 The opening sensor 5 3 , a fuel oil tank 6 1 for fuel storage, a fuel pump 6 2 for pumping fuel from the fuel tank 61 and outputting it, a lubricating oil pump controlled by the electronic control unit 8 7 1 and a lubricating oil tank 7 2 connected to the lubricating oil pump 7 1 , a temperature sensor 3 1 4 disposed on the engine 3 and an engine revolution number sensor 3 1 5 . The electronic control unit 8 can respectively receive the rotation speed of the engine 3, the opening degree of the throttle valve 52, and the temperature of the engine 3, and calculate and compare the signals, and then output a control signal to determine the fuel supply. Please refer to FIG. 2 and FIG. 3 simultaneously. When the second stroke injection engine 3 of the present invention is operated, the fresh air of the outside is first introduced into the engine 3 by the air intake device 51, and the fuel pump 6 2 of the fuel oil tank 6 1 pumps the fuel. To the fuel injection device 4, through the fuel inlet 41 to the fuel nozzle 4 2, and the fuel pressure regulator 45 can adjust the fuel of the excessive pressure to be discharged from the fuel outlet 44 to the fuel tank 61, when the proper amount of fuel and After the high-pressure air entering from the high-pressure air inlet 43 is mixed into the oil and gas in the pre-mixing chamber 46, the mixed gas nozzle 47 injects the oil and gas into the combustion chamber 3 1 3 to generate power, and pushes the piston 3 1 2 to reciprocate. Movement, the crankshaft 3 2 1 is driven by the connecting rod 3 2 2 for synchronous rotation. The electronic control unit 8, the receiving temperature sensor 3 1 4, the engine revolution number sensor 3 1 5 and the throttle opening degree sensor 5 3 respectively sense the temperature of the engine 3, the number of revolutions of the engine 3, and the throttle valve 52. The data obtained by the opening size, and the amount of fuel injected per cycle is determined according to the injection parameters;

1252275 V. Description of the invention (5) The control unit 8 receives various signals and analyzes and calculates to provide fuel, so that the fuel atomized by the fuel injection device 4 can be fully burned in the combustion chamber 3 1 3, thereby improving the engine 3 Combustion efficiency reduces the deterioration of air quality. In the present invention, the fuel injection device 4 is disposed on the cylinder head 31.1, and a fuel pressure regulator 4 5 is disposed in the fuel injection device 4,

The mixture nozzle 47 of the fuel injection device 4 is disposed toward the combustion chamber 3 1 3 of the cylinder head 31, and the spark plug 3 3 is disposed toward the fan cover 3 2 4 side, by placing the spark plug 3 3 on the fan. The cooling air can cool the temperature of the spark plug 3 3 on the cooling air passage formed by the cover 3 2 4 and the hood 30, and when the fuel injection device 4 is assembled, the spark plug 3 3 is located at the fan cover 3 2 4 On the side, it does not interfere with the assembly of the fuel injection device 4, and the convenience of assembly is achieved, and the fuel inlet 4 1 and the fuel outlet 44 of the fuel injection device 4 are disposed opposite to the spark plug 3 3 to make the spark plug 3 3 Keep away from the fuel inlet 4 1 and the fuel outlet 4 4 to ensure the safety of the engine 3 to operate, so that the two-stroke injection engine is set to the speed of the locomotive, to achieve the convenience of assembly and to ensure the safety of the engine.

In summary, the structure of the present invention is not found on the market, and its structure can improve the convenience of the fuel injection device to achieve assembly, and ensure the safety of the engine actuation, which has become a novel and progressive element. To file an application for invention according to law, please ask for a detailed examination of your review committee, and Huishou is approved for the examination of patents.

Page 9 1252275 Brief description of the diagram I. Schematic description Fig. 1 is a cross-sectional view of the conventional two-stroke locomotive engine. Figure 2 is a cross-sectional view of the two-stroke jet engine of the present invention. Figure 3 is a schematic diagram of an actuated state of the present invention. Second, the figure number description 1 2 air inlet 1 4 exhaust port 1 6 cooling fan 3 1 cylinder 3 1 2 piston 1 engine 1 1 spark plug 1 3 cylinder 1 5 crankshaft 2 engine cover 2 1 hole 3 engine 30 hood Cover 311 cylinder head 3 1 3 combustion chamber 3 1 4 temperature sensor 3 1 5 engine revolution number sensor 3 2 crankcase 3 2 1 crankshaft 3 2 2 link 3 2 3 cooling fan 3 2 4 fan cover 3 3 ignition device (Mars plug) 4 Fuel injection device 40 Outer cover 4 1 Fuel inlet 4 2 Fuel nozzle 4 3 High pressure air inlet 4 4 Fuel outlet 4 5 Fuel pressure regulator 4 6 Premixing chamber 4 7 Mixing gas nozzle 4 8 Signal connector 5 1 intake device 5 2 throttle valve

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Claims (1)

!252275 ^^^---Room No. 92LSfifi4fl /,, the patent application scope of the arrested locomotive fuel injection engine, the engine is equipped with a cylinder, ^ oil injection device, the fuel injection whai fuel injection station 兮 b η ^ The mixing nozzle of the device;; the base is set to the side of the fan cover, on the ω, 丄 wide passage, its characteristics are adjusted in the fuel pressure, cry,, ^ VL state, and the clothing of the fisherman Fuel inlet direction setting. The correction device is configured to have: a steam red head, a spark plug, and a device disposed on the cylinder head and disposed toward the combustion chamber of the cylinder head: the position cover and the hood are shaped to be sprayed, and the glow device is provided Covering an outer cover, and the fuel is out of η 广