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Gaseous fuel combustion apparatus for an internal combustion engine

A technology of combustion device and gas fuel, which can be applied to fuel injection device, internal combustion piston engine, gaseous engine fuel, etc., and can solve problems such as reduced effect

Inactive Publication Date: 2016-11-23
WESTPORT POWER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When using swirl motion, the effect of PM generation may be reduced under some transient conditions even when using high injection pressures

Method used

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  • Gaseous fuel combustion apparatus for an internal combustion engine
  • Gaseous fuel combustion apparatus for an internal combustion engine
  • Gaseous fuel combustion apparatus for an internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] With reference to the attached drawings and first to figure 1 and figure 2 , shows an engine 10 including a gas fuel combustion device 15 according to a first embodiment. The feed manifold 100 includes a first distribution chamber 110 and a second distribution chamber 120 , also referred to as plenum chambers, in fluid communication with each other through a disperser 130 . First distribution chamber 110 is in fluid communication with throttle valve 140 to receive an air charge from the intake port of engine 10 and, when engine 10 employs exhaust gas recirculation, EGR valve 150 is operable to allow exhaust gas to enter the intake air stream . A pair of feed passages 20 extend along each side of one cylinder head bolt 5 and fluidly connect the second distribution chamber 120 with a respective feed valve 40 for each cylinder 90 . Each feed channel 20 includes a feed runner 22 connected to the second distribution chamber 120 and a feed port 24 located in the cylinder ...

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PUM

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Abstract

Diesel-cycle engines are known to have greater power, torque and efficiency compared to Otto-cycle engines of like displacement. When the fuel is a gaseous fuel, such as natural gas, a pilot fuel (such as diesel) is normally required to assist with ignition in a gaseous fuelled Diesel-cycle engine. It would be advantageous to reduce the power, torque and efficiency gap between a Diesel-cycle engine and a gaseous fuelled Otto-cycle engine. A combustion apparatus for a gaseous fuelled internal combustion engine comprises a combustion chamber defined by a cylinder bore, a cylinder head and a piston reciprocating within the cylinder bore. A diameter of the cylinder bore is at least 90 mm and a ratio between the diameter and a stroke length of the piston is at most 0.95. There is at least one intake passage for delivering a charge to the combustion chamber, and at least one intake valve is configured in the cylinder head and cooperates with the intake passage to create a predominant tumble flow motion in the combustion chamber.

Description

technical field [0001] The present application relates to a combustion device for a gaseous fuel internal combustion engine. Background technique [0002] Inlet charge flow has a great influence on the performance of gas fueled internal combustion engines. The mixing of air with possible exhaust gases with gaseous fuel affects the combustion quality in the combustion chamber. The movement of the charge within the combustion chamber during the feed stroke and subsequently during the compression stroke determines the degree and quality of mixing of the gaseous fuel. In some parts of the engine map a homogeneous air-fuel charge may be desired, in other parts of the engine map a stratified fuel charge near the ignition improves engine performance, and in yet other parts of the engine map local enrichment But an overall lean air-fuel mixture yields better performance. Especially in the case of lean combustion, the creation of high turbulence is important for a stable ignition ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B43/00F02D19/02F02M21/02F02M61/04
CPCF02B43/00F02M21/0212F02B2023/106F02M26/19F02M26/21F02M26/22F02M35/10216F02M35/10255F02M35/10262F02M35/104Y02T10/12Y02T10/30F02F1/24F02P13/00
Inventor 罗德里克·C·S·比兹利菲利普·C·米尔沃德威廉·D·坦尼
Owner WESTPORT POWER
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