Engine starting oil spraying control strategy and oil spraying control system

Abstract

The invention provides an engine starting oil spraying control strategy. The engine starting oil spraying control strategy comprises the following steps that whether an engine starting command signalis True or False is judged; whether an engine starting request signal is True or False is judged; the engine rated rotation speed is acquired according to an engine water temperature signal; whether the signal that the engine rated rotation speed is smaller than the engine actual rotation speed is True or False is judged; whether the signal that the engine actual rotation speed is larger than theengine lowest starting rotation speed is True or False is judged; and staged precise control is conducted on the engine starting stage in the mode of sending an oil spraying command signal to precontrol an oil sprayer to spray oil and sending a torque model activation signal to control the oil sprayer to spray oil, fuel oil mixed gas concentration increasing is avoided, and energy consumption andpollution are low. The invention further relates to an oil spraying control system.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to an engine startup fuel injection control strategy and a fuel injection control system. Background technique [0002] In recent years, with the rapid development of my country's automobile industry, the number of automobiles has increased rapidly; however, due to the extensive use of automobiles, it has also brought huge pollution to the environment, and further brought enormous pressure on the environment and energy. [0003] At present, the problem of fuel consumption and energy loss caused by the traditional engine control strategy has not been well solved, especially in the engine starting stage, so how to further reduce the energy loss in the engine starting process, reduce fuel consumption and improve emissions is a current one. big problem. [0004] At present, when the traditional engine is started, the control strategy related to fuel injection is to start fue...

AI Technical Summary

Problems solved by technology

[0002] In recent years, with the rapid development of my country's automobile industry, the number of automobiles has increased rapidly; however, due to the extensive use of automobiles, it has also brought huge pollution to the environment, and has further brought enormous pressure on the environment and energy.

[0003] At present, the problem of fuel consumption and energy loss caused by the traditional engine control strategy has not been well solved, especially in the engine starting stage, so how to further reduce the energy loss in the engine starting process, reduce fuel consumption and improve emissions is a current one. big problem

[0004] At present, when the traditional engine is started, the control strategy related to fuel injection is to start fuel injection when the 12V starter motor drives the engine speed before reaching the starting speed; at the same time, in order to start the engine smoothly, the fuel mixture at this time is mostly In the enriched state, because the water temperature is not high, the number of fuel injections required is more than normal, resulting in relatively poor emissions and high fuel consumption.

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