Two-stroke internal combustion engine, method of operating two-stroke internal combustion engine and method of converting two-stroke engine

An engine and stroke technology, applied in the direction of internal combustion piston engine, combustion engine, gaseous engine fuel, etc., can solve problems such as the end of gas injection or the termination of no change

Active Publication Date: 2014-04-23
WAERTSILAE SCHWEIZ AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the amount of gas increases with increasing load, the start of gas injection through the injector is advanced, but the end or termination of gas injection is not changed

Method used

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  • Two-stroke internal combustion engine, method of operating two-stroke internal combustion engine and method of converting two-stroke engine
  • Two-stroke internal combustion engine, method of operating two-stroke internal combustion engine and method of converting two-stroke engine
  • Two-stroke internal combustion engine, method of operating two-stroke internal combustion engine and method of converting two-stroke engine

Examples

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Embodiment Construction

[0033] figure 1 A two-stroke engine 10 is shown schematically. The engine includes a body portion 12 and a cylinder unit 14 of several cylinder units of the engine 10 . The engine is also provided with an oxygen-containing gas inlet duct for fuel combustion. The oxygen-containing gas is usually air. The inlet conduit is connected to compressor means or the like (not shown) for supplying pressurized oxygen-containing gas which is fed into the engine through an oxygen-containing gas inlet 18 . The oxygen-containing gas inlet 18 comprises several openings arranged on the peripheral surface of the wall of the cylinder 20 . An oxygen-containing gas inlet 18 is arranged in the lower portion of the cylinder 20 to open into the combustion chamber 22 when the piston 24 is at or near its bottom dead center position. Combustion chamber 22 is defined by cylinder 20 , piston 24 and cylinder head 16 of the engine. The cylinder head 26 is provided with an exhaust valve 28 arranged in th...

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Abstract

The invention relates a two-stroke internal combustion engine (10) comprising at least one cylinder (20) with a piston (24) arranged reciprocateably between its top dead center and bottom dead center, and a cylinder cover (26) defining a combustion chamber (22), oxygen containing gas inlet (18) in the lower part of the cylinder (20) to be open into the combustion chamber (22) at least while the piston is at its bottom dead center position, a gaseous fuel inlet (30) arranged in the cylinder between the oxygen containing gas inlet (18) and the cylinder cover(26), and an exhaust valve (28) arranged to the cylinder cover at a center axis of the cylinder. The cylinder cover(26) is provided with pilot ignition pre-chambers (36) opening into the combustion chamber (22) through pre-chamber ports (34).The preset invention relates also to method of operating the two-stroke engine (10).

Description

technical field [0001] The invention relates to an internal combustion two-stroke engine comprising: at least one cylinder with a piston arranged to reciprocate between top dead center and bottom dead center; the cylinder defining a combustion chamber a cover; an oxygen-containing gas inlet in the lower portion of the cylinder, the oxygen-containing gas inlet opening into the combustion chamber at least when the piston is at its bottom dead center position; between the oxygen-containing gas inlet and the cylinder a gaseous fuel inlet disposed in the cylinder between the heads; and an exhaust valve disposed in the cylinder head. [0002] The invention also relates to a method of operating an internal combustion two-stroke engine on gaseous fuel, a method of converting a two-stroke engine operating on liquid fuel to a gas-operated two-stroke engine, and a cylinder head assembly for a two-stroke engine. Background technique [0003] Large two-stroke crosshead diesel engines ru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B7/06F02B19/10F02B19/12F02B19/14F02B25/04
CPCF02B43/10F02B19/14Y02T10/125Y02T10/32F02B19/12F02B19/1095F02B25/04F02B19/108F02B7/06F02B2075/025Y02T10/12Y02T10/30
Inventor I·尼隆德M·奥特汉努·西兰帕
Owner WAERTSILAE SCHWEIZ AG
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