Hydrogen gas fuel internal combustion engine, its hydrogen gas injection system and combustion method

A technology of injection system and internal combustion engine, applied in charging system, internal combustion piston engine, combustion engine, etc., can solve the problems of response speed and combustion control affecting engine power performance, economical emission performance and starting performance, etc.

Inactive Publication Date: 2009-02-18
CHERY AUTOMOBILE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The automobile hydrogen fuel internal combustion engine combustion method and device provided by the present invention are used to solve the problem that the existing automobile hydrogen fuel internal combustio

Method used

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  • Hydrogen gas fuel internal combustion engine, its hydrogen gas injection system and combustion method
  • Hydrogen gas fuel internal combustion engine, its hydrogen gas injection system and combustion method

Examples

Experimental program
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Effect test

Embodiment approach 1

[0035] Embodiment 1: In the cold start stage of the engine, hydrogen is injected into the intake port by the gas port hydrogen injector to solve the problem of difficult cold start of the hydrogen fuel engine.

Embodiment approach 2

[0036] Embodiment 2: When the engine is under full load or heavy load conditions, hydrogen is directly injected into the combustion chamber from the high-pressure hydrogen injector in the cylinder to improve the engine's power performance and economy.

Embodiment approach 3

[0037] Implementation Mode 3: When the engine is under partial load conditions, the engine ECU controls the opening time and continuous pulse width of the airway hydrogen injector and the in-cylinder high-pressure hydrogen injector according to the calibration data to control the intake air volume of the two intake modes. to optimize engine combustion.

[0038] The combustion system of the dual-channel mixed-injection hydrogen fuel engine of the present invention, after vaporizing a part of the liquid hydrogen fuel, passes through the airway injection fuel supply system, injects the airway hydrogen injector into the intake manifold of the engine, and mixes it with air Enter the combustion chamber; part of the liquid hydrogen fuel is directly injected into the combustion chamber by the high-pressure hydrogen injector in the cylinder after being pressurized. The ECU reads the MAP according to the engine operating conditions, and controls the ratio of the two fuel supply modes by...

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Abstract

The invention relates to a hydrogen fuel internal-combustion engine and the hydrogen injection system and the combustion method thereof; part of the liquid hydrogen fuel is vaporized and injected into the engine inlet manifold by the gas channel hydrogen injector via the gas channel injector fuel supply system; the hydrogen injected into the engine inlet manifold is mixed with the air to enter the combustion chamber; part of the liquid hydrogen fuel is compressed to be injected into the combustion chamber by the high pressure hydrogen injector inside the cylinder. The combination of the two fuel supply modes improves the power performance of the engine, avoids the abnormal combustion situation and reduces the hydrogen intensity inside the gas inlet channel; thereby, the abnormal combustion such as the backfire is avoided.

Description

technical field [0001] The invention relates to a hydrogen injection system of a hydrogen fuel internal combustion engine, and also relates to an internal combustion engine using the system and a combustion method thereof. Background technique [0002] At present, most of the existing hydrogen-fueled internal combustion engines adopt a single form of port injection, premixing outside the cylinder, or direct injection in the cylinder. The hydrogen gas of the port injection hydrogen fuel engine is injected into the intake port of each cylinder, and the hydrogen gas and air are mixed in the air port before entering the cylinder, which limits the response speed of fuel supply and combustion control to a certain extent, thus limiting the engine power performance and economical improvement. In addition, in traditional port injection engines, the residual hydrogen in the air passage will lead to abnormal combustion phenomena such as flashback; moreover, the mixture of hydrogen and...

Claims

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Application Information

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IPC IPC(8): F02M21/02F02B15/00F02B5/00
CPCY02T10/32Y02T10/12Y02T10/30
Inventor 汤绪雯
Owner CHERY AUTOMOBILE CO LTD
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