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multi-cylinder piston engine

A piston engine, engine technology, applied in the direction of internal combustion piston engine, engine operation, engine components, etc., can solve the problem of how to control without disclosure, and achieve the effect of simple and reliable control mechanism

Active Publication Date: 2017-01-18
WARTSILA FINLAND OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The aforementioned patents do not disclose how to control the valves that supply the oxygen-containing gas

Method used

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  • multi-cylinder piston engine
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  • multi-cylinder piston engine

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Embodiment Construction

[0022] Embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0023] figure 1 A piston engine 20 is shown schematically with introduction means for introducing additional oxygen-containing gas into the cylinders 19 of the engine 20 . The additional oxygen-containing gas is the pressure medium introduced into the cylinders 19 of the engine 20 before ignition and after normal air intake is complete. In a four-stroke engine, this means that the pressure medium is introduced into the cylinder 19 after the intake valve of the cylinder 19 is closed. The pressure medium can be, for example, pressurized air or pure oxygen. Charge air can be generated by a compressor and is therefore suitable for a variety of applications. In this description, the term "additional combustion air" is used for the pressure medium. However, the invention is not limited to the use of air as pressure medium.

[0024] exist figure 1 In the ex...

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Abstract

A multi-cylinder piston engine (20) comprising an introduction mechanism (24) for introducing combustion air into cylinders (19) of the engine (20) and at least one cam-operated valve lifter for each cylinder (19) of the engine (20) (4), the valve lifter (4) is arranged to open the gas exchange valves (24, 25). The engine (20) also includes introduction means for introducing additional oxygen-containing gas into the cylinders (19) of the engine (20), the introduction means comprising a pressure medium source (18) for providing additional oxygen-containing gas, and each cylinder ( 19) The associated injection valve (10), the connection mechanism (21) for connecting the pressure medium source (18) to the injection valve (10) and the cylinders (19) of the engine (20) for controlling the injection Valve (12) controls the operation of valve (10). Each control valve (12) is arranged to be operated by the gas exchange cam (1) of the corresponding cylinder (19).

Description

technical field [0001] The invention relates to a multi-cylinder piston engine. Background technique [0002] Large internal combustion engines used for ship propulsion or power generation must respond quickly to load changes. One problem with turbocharged internal combustion engines is so-called turbo lag. Turbo lag is the time it takes for a turbocharger to operate efficiently after an increase in load. Especially at relatively low initial loads, the turbocharger cannot respond very quickly to the increased combustion air demand, which leads to a reduction in engine speed when the load suddenly increases. Lack of combustion air can also occur when the engine is running under partial load. [0003] One possible solution to the turbo lag problem is to assist the turbocharger with an electric motor. Another solution to reduce turbo lag and increase the amount of combustion air available under other operating conditions is to introduce additional charge air into the turboc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B29/00F02B47/06F02B21/00F02N9/04F01L1/14
CPCF01L1/146F01L2760/001F01L2820/034F02B21/00F02B29/00F02B41/10F02D13/0246F02D13/0273F02D13/0276F02M2023/008F02N9/04F01L2305/00Y02T10/12F01L1/08F01L1/14F02B47/06
Inventor 马格努斯·松德斯滕
Owner WARTSILA FINLAND OY
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