Starting ignition control method for hydrogen internal combustion engine

Abstract

The invention relates to a starting ignition control method for an inlet duct injection type hydrogen internal combustion engine. The starting ignition control method is characterized in that the starting process is divided into three phases and comprises the following steps of: (1) starting the hydrogen internal combustion engine, and stopping the work of a hydrogen injection system and an ignition system; (2) judging the working cycle after the starting of the hydrogen internal combustion engine through monitoring a crankshaft or camshaft signal; (3) beginning to work by the ignition system; and (4) beginning to work by the hydrogen injection system, thereby entering a starting idling control process. The starting ignition control method for the hydrogen internal combustion engine has the advantages that: in the first phase, as the hydrogen injection system and the ignition system stop working, the possible residual hydrogen in air inlet and air exhaust systems is completely discharged through the idling process of the internal combustion engine; the second phase is a transition working condition, the ignition system begins to work and enters a starting idling preparation phase; and from the beginning of the third phase, the hydrogen injection system begins to work and enters a starting idling control process. By using the three-phase starting ignition control method provided by the invention, the occurrence of starting tempering phenomenon of the hydrogen internal combustion engine can be completely avoided in the hydrogen internal combustion engine; and the starting ignition control method has the characteristics of high starting safety and simple control mode.

Description

technical field [0001] The invention relates to the technical field of internal combustion engine start control, in particular to a start ignition control method for an intake port injection type hydrogen internal combustion engine. Background technique [0002] With the advancement of technology and the development of society, fossil fuels have become an indispensable energy carrier in daily life, and their wide application has brought serious environmental, economic and social problems. Since fossil energy is a non-renewable resource, with the The development and utilization of alternative fuels are receiving more and more attention. [0003] Hydrogen is considered to be the most promising alternative fuel in the future due to its abundant reserves, renewable and water combustion products. Hydrogen can be used in two ways in the field of vehicle power plants, hydrogen internal combustion engine and fuel cell. Due to the high cost of fuel cells, the technology still needs...

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Problems solved by technology

[0004] Due to the smallest volume of hydrogen molecules, it is inevitable that there will be slight leakage of hydrogen storage and delivery devices during use. There may be a small amount of leaked hydrogen gas in the tunnel. Due to the extremely wide flammable range of hydrogen gas, the traditional starting ignition method is very likely to cause flashback, which will seriously affect the reliability of the intake system and the safe use of the vehicle.

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