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Electric controlled fuel oil injection four stroke gasoline engine

A gasoline engine, fuel injection technology, applied in combustion engines, internal combustion piston engines, engine control, etc., can solve the problems of user acceptance, difficult overall machine cost, and high oil pump cost

Inactive Publication Date: 2008-10-01
ZHEJIANG FAI ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If this type of EFI system is used on an engine with a small number of cylinders, such as a twin-cylinder or a single-cylinder, the cost of the whole machine is difficult to be accepted by users due to the high cost of the oil pump.

Method used

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  • Electric controlled fuel oil injection four stroke gasoline engine
  • Electric controlled fuel oil injection four stroke gasoline engine
  • Electric controlled fuel oil injection four stroke gasoline engine

Examples

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Embodiment Construction

[0018] In Embodiment 1, the intake system 30 of the electronically controlled fuel injection four-stroke gasoline engine of the present invention includes a heat insulating device 1, an intake pipe (intake manifold for a multi-cylinder engine) 2, a throttle valve 3, a throttle The valve body 4, etc., and the electric fuel injector 5 are installed on the intake pipe (intake manifold) 2 connected with the heat insulation device, and the fuel injection direction of the fuel injector is the air intake port on the cylinder head 6. 7. The fuel injector is connected to the fuel tank 10 through the fuel inlet pipe 8 and the fuel return pipe 9. The position of the fuel tank 10 should not be lower than the fuel inlet of the fuel injector to ensure that the fuel inlet of the fuel injector is always filled with fuel. If the fuel tank has to be arranged lower than the fuel injector, a fuel circulation pump (such as a diaphragm pump commonly used in car carburetor engines, etc.) should be a...

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Abstract

A 4-stroke gasoline engine with electrically controlled fuel oil jet is composed of main body, admission system, electric pulse fuel oil jetter, fuel oil supply pipeline and return pipeline, exhaust system, electronic control unit ECU, igniter, rotation speed and angle sensor and throttle position sensor. It features that said fuel oil jetter is installed on or before a heat insulating unit in admission system.

Description

technical field [0001] The invention relates to an electronically controlled fuel injection four-stroke gasoline engine. Background technique [0002] Because the electronically controlled fuel injection engine can precisely control the air-fuel ratio, its harmful exhaust gas emissions can be effectively controlled, and the engine performance can be further improved, which also provides a guarantee for the application of exhaust gas catalytic treatment devices. However, the oil supply system of an EFI engine is much more complicated than that of a carburetor, and the cost is high. Therefore, in some application fields with high cost control requirements, such as motorcycles, it is difficult to popularize the EFI system. [0003] In the existing electronically controlled fuel injection four-stroke gasoline engine, the fuel system consists of at least one pressurized oil pump, one or more electronically controlled fuel injection valves, an oil pressure regulator, an electronic...

Claims

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Application Information

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IPC IPC(8): F02D41/26
CPCY02T10/47Y02T10/40
Inventor 杨延相郗大光
Owner ZHEJIANG FAI ELECTRONICS
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