Fuel injection control circuit for double-cylinder gasoline engine

Abstract

The invention discloses a fuel injection control circuit for a double-cylinder gasoline engine. Fuel injection is adjusted through signals of a sensor. The fuel injection control circuit for the double-cylinder gasoline engine comprises a microprocessing chip sub-circuit, an engine control analog power supply integrated sub-circuit, an input filter and level switch sub-circuit and an electronic control sub-circuit; the microprocessing chip sub-circuit is electrically connected with the engine control analog power supply integrated sub-circuit; the microprocessing chip sub-circuit is electrically connected with the input filter and level switch sub-circuit; the input filter and level switch sub-circuit is electrically connected with the electronic control sub-circuit; the engine control analog power supply integrated sub-circuit is electrically connected with the electronic control sub-circuit; and the electronic control sub-circuit is electrically connected with the engine control analog power supply integrated sub-circuit. According to the fuel injection control circuit for the double-cylinder gasoline engine, the air-fuel ratio can be precisely controlled, the discharge amount ofharmful waste gas is effectively controlled, and a guarantee is provided for efficient exertion of a tail gas aftertreatment device; and meanwhile the properties of the engine can be further improved, the power of the engine is steady, and the fuel injection control circuit accords with the national related standards.

Description

technical field [0001] The present invention relates to the technical field of gasoline engines, more specifically, to a fuel injection control circuit for a two-cylinder gasoline engine. Background technique [0002] At present, the small gasoline engines produced by general machinery factories and motorcycle companies in the Chinese market mainly use carburetor technology, and seldom use EFI technology. The electronically controlled gasoline injection system takes the electronic control unit ECU as the control center, and uses various sensors installed on the engine and the vehicle to measure various operating parameters of the engine, and then accurately controls the injector according to the control program pre-stored in the ECU The amount of fuel injected enables the engine to obtain a combustible mixture with the best air-fuel ratio under various operating conditions. The current domestic engine electronically controlled fuel injection system adopts the traditional lo...

AI Technical Summary

Problems solved by technology

The current domestic engine electronically controlled fuel injection system adopts the traditional look-up table method and classical PID control algorithm. Under special working conditions such as engine cold and hot start, acceleration and deceleration, and idling, there is a problem of low air-fuel ratio control accuracy. It is necessary to further improve the utilization rate of fuel oil and reduce emission pollution

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