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Hydrogen fueled spark ignition engine

A spark ignition, engine technology, applied in combustion engines, gaseous engine fuels, internal combustion piston engines, etc., can solve problems such as low compression ratio and achieve good regeneration effect

Inactive Publication Date: 2008-04-09
FORD GLOBAL TECH LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

To avoid the aforementioned auto-ignition, the compression ratio needs to be kept relatively low, which leads to another problem with existing hydrogen fueled engines

Method used

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  • Hydrogen fueled spark ignition engine
  • Hydrogen fueled spark ignition engine
  • Hydrogen fueled spark ignition engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] Such as figure 1 As shown, engine 10 has a plurality of cylinders 12 operated by a plurality of spark plugs 14 . A plurality of fuel injectors 18 provide gaseous hydrogen to cylinders 12 while the fuel is mixed with air and EGR entering through throttle plate 16 and EGR valve 24 , respectively. EGR valve 24 , fuel injector 18 , and preferably throttle plate 16 are operated by electronic engine controller 22 . A controller 22 selected from the class of engine controllers known to those skilled in the art and proposed by this disclosure has a processor (CPU), input / output ports, an electronic storage medium containing processor-executable instructions and correction values, Read-only memory, random access memory, and keep-alive memory. Controller 22 receives signals from a plurality of sensors 36 coupled to engine 10 and controls spark timing of spark plug 14 , fuel delivery by injector 18 , EGR flow by valve 24 , and throttle plate 16 engine air flow. In one embodime...

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Abstract

A hydrogen fueled reciprocating spark ignition engine includes a fuel system for providing gaseous hydrogen to the cylinders of the engine and a lean NOx trap coupled to the engine for treating the engine's exhaust. An EGR system provides recirculated exhaust gas to the engine, and a controller operates the fuel system and EGR system during periodic purging of the lean NOx trap such that the engine is operated fuel rich, with the mass of EGR approximating 40%-80% of the mass of air and fuel.

Description

technical field [0001] The invention relates to a reciprocating spark ignition internal combustion engine using gaseous hydrogen as fuel. Background technique [0002] Hydrogen has long been viewed as an interesting potential motor fuel. On the one hand, hydrogen combustion produces very little hydrocarbons (HC), carbon monoxide (CO) and carbon dioxide (CO2) because no carbon is present in the fuel. 2 ). Also, carbon-containing exhaust gas components are produced only from the small amount of lubricating oil that participates in the combustion. Therefore, hydrogen is a satisfactory fuel from the viewpoint of exhaust gas purification. Because of its combustion characteristics, especially its very low flammability limit, it is possible to run hydrogen-fueled engines at very lean air / fuel ratios. For the purposes of this specification, there will be discussion of the equivalence ratio, which generally in automotive usage refers to the ratio of the stoichiometric air / fuel ra...

Claims

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Application Information

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IPC IPC(8): F02D43/00F02D41/26F02B43/10F01N3/08F02D19/02F02D21/08F02D41/00F02D41/02F02M21/02
CPCF02D41/0275F02M21/0278Y10S123/12Y02T10/47Y02T10/22F01N3/0842Y02T10/32F02M21/0206F02D41/0027F01N3/0871F02D19/024Y02T10/24F02D41/0055Y02T10/12Y02T10/30Y02T10/40
Inventor 罗伯特·杰伊·纳特金唐晓国西亚马克·哈希米约瑟夫·罗伯特·泰斯威廉·F·斯托克豪森
Owner FORD GLOBAL TECH LLC
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