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Prechamber arrangement for gas engines and gas engines

A technology of gas engine and pre-combustion chamber, which is applied to gaseous engine fuel, combustion engine, internal combustion piston engine, etc., can solve the problem that the pre-combustion chamber is not simple.

Active Publication Date: 2022-05-17
SCANIA CV AB
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, using the pre-chamber is not simple

Method used

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  • Prechamber arrangement for gas engines and gas engines
  • Prechamber arrangement for gas engines and gas engines
  • Prechamber arrangement for gas engines and gas engines

Examples

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Embodiment Construction

[0017] In order to achieve the desired combustion and as clean exhaust gas as possible in a lean gas engine with a prechamber, the desired gas mixture should be achieved in the prechamber body cavity. Achieving the desired gas mixture can be complicated by mixing the supplied gas and the lean gas mixture from the main combustion chamber each time. In order to achieve the desired combustion in a cost-effective manner and with acceptable NOx emission levels, a pre-chamber arrangement according to the present disclosure was developed. The present disclosure applies to all kinds of gas engines. The present disclosure may relate to stationary gas engines, transportation gas engines, and the like. In particular, the present disclosure may relate to lean gas engines for power generation.

[0018] Thus, according to an aspect of the present disclosure, a pre-chamber arrangement for a gas engine is provided. The arrangement comprises: a pre-chamber body accommodating a body cavity; ...

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Abstract

The invention relates to a prechamber arrangement (100) for a gas engine (1), comprising: a prechamber body (20) accommodating a body cavity (30); and supply means (50) for A gaseous medium (52) is supplied into the pre-chamber body cavity (30); wherein the pre-chamber body (20) comprises a bottom (22) with a channel (40) for allowing the gas to Flow between the combustion chamber body (30) and the main combustion chamber (10) of the gas engine (1), wherein each channel (40) faces from the interior of the pre-chamber body cavity (30) along the channel axis (C) The opening (42) extends to an outer opening (44) configured to face the main combustion chamber (10), wherein the bottom (22) includes a curved outer surface (24), wherein the channel (40) is The radius (r) is arranged obliquely and the bottom comprises a flat surface (46) surrounding the outer opening of said channel.

Description

technical field [0001] The invention relates to a pre-chamber arrangement for a gas engine. The invention also relates to a method for combustion in a pre-chamber arrangement, a gas engine comprising such an arrangement and the use of such a pre-chamber arrangement. Background technique [0002] Internal combustion engines operating on gaseous fuels are spark ignited and are generally used in stationary applications. Such gas engines can be used to generate electricity and can be operated, for example, on gas from digesters and sewage systems, natural gas or any other biogas. Heavy-duty gas engines are often lean-burn engines, meaning the fuel is burned with excess air. This results in lower temperatures in the combustion chamber, which reduces NOx formation. However, lean burn requires higher ignition / activation energy, so a pre-chamber is often used. Typically, fully fuel-rich gas is supplied into the pre-chamber during the intake stroke, and this fuel gas is then mixe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B19/18F02B19/08F02B19/10
CPCF02B19/18F02B19/08F02B19/108F02B19/1023F02B19/12Y02T10/12F02B2710/00F02B43/00
Inventor S·莱容P·阿克塞尔松
Owner SCANIA CV AB
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