Hydrogen fuel engine control method on basis of camshaft signal

Abstract

The invention discloses a hydrogen fuel engine control method on the basis of a camshaft signal. A camshaft fluted disc adopted by the invention comprises two wide teeth and two narrow teeth, wherein the two width teeth are adjacent, and the two narrow teeth are adjacent; the angle of the camshaft corresponding to the sum of the width of each tooth and a tooth missing width is 90 degrees; according to the mechanical installation position of the camshaft fluted disc, the corresponding camshaft phase is determined when each cylinder is ignited and hydrogen is injected; the hydrogen fuel engine is controlled once when the camshaft fluted disc rotates 90 degrees each time; when the hydrogen fuel engine is controlled each time, the currently-captured tooth type is determined to be wide tooth or the narrow tooth by a camshaft signal; according to the tooth type captured by the time and the previous time, the phase of the current camshaft is determined; according to the current camshaft phase, a cylinder which needs to output a hydrogen injection and ignition control signal at present is determined; and a corresponding control signal is output to the cylinder. According to the hydrogen fuel engine control method, control accuracy can be improved, and abnormal burning phenomena of the tempering, the afterburning and the like of the engine because of phase judgment errors can be avoided.

Description

Technical field [0001] The invention relates to a vehicle hydrogen fuel engine control method based on a camshaft signal, which belongs to the field of engine electronic control. Background technique [0002] Energy and environmental issues are the two bottlenecks restricting the development of the automotive industry. Studies have shown that automobile exhaust has become a major cause of air pollution. "The 2030 Vision Report on the U.S. Transition to the Hydrogen Economy" believes that petroleum resources may be exhausted in 25-30 years. An optimistic estimate is that after the middle of the 21st century, oil resources will also face exhaustion. [0003] As a clean, efficient, safe and sustainable energy, hydrogen energy is regarded as the clean energy with the most development potential in this century. The product water after the combustion of hydrogen has no CO at all 2 And various pollutants, it is an ideal fuel for engines. Using hydrogen as the engine fuel can solve the...

AI Technical Summary

Problems solved by technology

However, there is currently no scheme for hydrogen injection ignition settings based on camshaft signals that can be used for 4-cylinder hydrogen engines to improve control accuracy

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