A Methanol Diesel Engine Injection Quantity Control System

Abstract

The invention provides a novel jetting amount control method for a methanol-diesel engine. The novel jetting amount control method comprises the following steps that S1, the temperature in a fuel input channel of an engine air cylinder and the temperature in an exhaust gas discharging channel of the engine air cylinder are detected, the temperature in the fuel input channel serves as a first temperature value, and the temperature in the exhaust gas discharging channel serves as a second temperature value; S2, the obtained first temperature value is compared with a preset temperature upper limit value, whether the first temperature value is larger than the temperature upper limit value or not is judged, and if not, the step S1 is retuned; and S3, if yes, methanol is input into the fuel input channel, methanol and diesel mixed supplying is started, and the jetting speed of the methanol is adjusted according to the variation tendency of the first temperature value. According to the noveljetting amount control method, methanol is input to substitute diesel to burn so as to decrease the gas inlet temperature and lower a burning reaction, so that the risk that the burning temperature ofthe engine is too high is eradicated; and the jetting speed of the methanol is adjusted according to the variation tendency of the first temperature value, the gas inlet temperature is flexibly adjusted advantageously, and the power of the engine is adjusted.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to a method for controlling the injection quantity of a methanol diesel engine. Background technique [0002] Existing engines generally use diesel as fuel to function through the full combustion of diesel. The heat generated by diesel combustion is high. While ensuring sufficient functions, it is also easy to cause high-temperature operation of the engine, and even the risk of cylinder deflagration. Contents of the invention [0003] Based on the technical problems existing in the background technology, the present invention proposes a method for controlling the injection quantity of a methanol-diesel engine. [0004] A kind of methanol diesel engine injection amount control method that the present invention proposes, comprises the following steps: [0005] S1. Detecting the temperature in the fuel input channel of the engine cylinder and the temperature in the exhaust gas disc...

AI Technical Summary

Problems solved by technology

The heat generated by diesel combustion is high. While ensuring sufficient functions, it is also easy to cause high-temperature operation of the engine, and even the risk of cylinder deflagration

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