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Fuel oil injection control method

A technology of fuel injection and injection method, which is applied in fuel injection control, electrical control, engine control and other directions, can solve the problems of incomplete exhaust purification and poor exhaust quality, etc., to improve engine performance, reduce fuel consumption, improve The effect of exhaust gas quality

Inactive Publication Date: 2009-04-15
CHINA VAGON AUTOMOTIVES HLDG CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for controlling fuel injection by an electronic control unit of a motorcycle engine. The method accurately calculates the injection quantity and injection time of the fuel, so that the fuel is fully burned, reduces fuel consumption and improves the quality of exhaust gas, and overcomes the Problems of poor exhaust quality and incomplete exhaust purification in the prior art

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Embodiment Construction

[0031] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0032] The invention provides a motorcycle engine fuel injection control method, such as figure 1 Shown is a schematic diagram of the mechanism of a motorcycle single-cylinder 4-stroke engine. The steps for the ECU to control the entire fuel injection process include: first, the ECU collects the signal quantities transmitted by the water temperature sensor 5 and the intake air temperature sensor 3, and calculates and corrects the last fuel injection quantity according to these signal quantities ; Second, the ECU obtains the crankshaft position signal through the crankshaft position sensor 4 to determine the position of the piston, thereby determining the moment to start fuel injection. Usually, the fuel injection timing refers to the moment when the piston is at the top dead center and moves downward during the intake process; finally...

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Abstract

The invention relates to a control method of fuel injection of a motorcycle engine, which comprises the following steps of: firstly, carrying out calculation and modification to the amount of fuel injection of last time according to semaphore transmitted by a sensor; secondly, determining the time for start of fuel injection by ECU through signals at the crankshaft position; and finally, transmitting the modified amount of fuel injection to a fuel injector which injects fuel to a cylinder according to the obtained signals of the amount of the fuel injection at the time of fuel injection. The method leads the fuel to be burnt fully by controlling the amount of fuel injection and the start time of fuel injection precisely, thus reducing the fuel consumption, simultaneously improving the quality of the tail gas and improving the engine performance.

Description

technical field [0001] The invention relates to the technical field of motorcycle engine electronic control systems, in particular to a fuel injection control method. Background technique [0002] At present, motorcycles are an indispensable means of transportation. As the pollution caused by motorcycle exhaust emissions to the atmosphere is becoming more and more serious, how to control the pollution of motorcycle exhaust to the atmosphere has become an urgent problem to be solved. In addition, due to the lax implementation of motorcycle emission control standards, many motorcycles are sold out of the factory when they exceed the standards or are very close to exceeding the standards, resulting in serious excess of motorcycles in use and restricting the overall development of the motorcycle industry. [0003] Regarding how to reduce motorcycle exhaust pollution, the current main solutions are organic internal purification and external treatment. The use of traditional mech...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/26F02D41/30
Inventor 李朝晖刘涛何文鑫
Owner CHINA VAGON AUTOMOTIVES HLDG CO LTD
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