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Diesel engine and method for starting a diesel engine

A technology of diesel engine and transmission mechanism, applied in the direction of engine starting, engine components, engine control, etc., to achieve good heating effect

Inactive Publication Date: 2017-08-29
MOTOREN UND TURBINEN UNION MUNCHEN GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also known are systems that make it possible to change the compression ratio of the geometry

Method used

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  • Diesel engine and method for starting a diesel engine

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Embodiment Construction

[0014] figure 1 A diesel engine is shown schematically, which is basically suitable for use in heavy agricultural machinery, rail vehicles or ships. A diesel engine comprises a plurality of cylinders 1, 2, 3, 4 which respectively have combustion chambers 5, 6, 7, 8 for burning an air-fuel mixture and pistons guided in the combustion chambers 5, 6, 7, 8 9, 10, 11, 12. The diesel engine comprises at least one injector 17 per cylinder 1 , 2 , 3 , 4 which is arranged to bring fuel into the combustion chamber 5 , 6 , 7 , 8 of the respective cylinder 1 , 2 , 3 , 4 . For simplicity, in figure 1 Only one of the injectors 17 is provided with a reference number. The cylinders 1, 2, 3, 4 comprise one or more input valves 18, 19, 20, 21 and one or more output valves 22, 23, 24, 25, respectively. The inlet valves 18 , 19 , 20 , 21 are provided for feeding combustion air from the intake manifold 33 to the combustion chambers 5 , 6 , 7 , 8 of the respective cylinders 1 , 2 , 3 , 4 . Int...

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Abstract

The invention relates to a diesel engine, in particular a high-power diesel engine, which comprises a variable valve train (13) comprising an adjusting unit (14) for adjusting a valve opening time, a valve lift, a camshaft phase position and / or a valve steering, and a control or regulating unit (16) for controlling the adjusting unit (14). Said control and / or regulating unit (16) comprises at least one operational mode provided for starting the engine when the engine is at a low temperature, in which the control and / or regulating unit (16) is provided to adjust the valve opening time, at least during a preliminary phase for at least one inlet valve (18, 19, 20, 21), which overlaps at least with one compression stroke of an associated cylinder (1, 2, 3, 4), and to interrupt an injection of fuel at least into the cylinder (1, 2, 3, 4) associated with the inlet valve (18, 19, 20, 21). The invention also relates to a method for starting said type of diesel engine.

Description

technical field [0001] The invention relates to a diesel engine, in particular a high-performance diesel engine, and a method for starting a diesel engine, in particular a high-performance diesel engine. Background technique [0002] Diesel engines tend to have poor starting performance in cold ambient conditions. In order to improve the starting performance, it is known to provide additional compressed air heating. Systems are also known which enable a change in the geometrical compression ratio. Contents of the invention [0003] The invention is based in particular on the object of providing a diesel engine with better starting behavior at low engine temperatures and improving the method for starting a diesel engine at low engine temperatures. This is achieved by the diesel engine according to the invention according to claim 1 and by the method according to the invention according to claim 9 . Developments of the invention emerge from the dependent claims. [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/06F02D13/02F02N19/00F02N19/04F02D41/12
CPCF02D13/0269F02D41/062F02N19/004F02N19/04F02D2041/001F02D2013/0292F02D41/126Y02T10/12F02D41/0062F02D41/0077F02D41/04F02D41/064F02D2041/0092
Inventor C.鲁卡斯W.菲姆尔J.沙克J.里普
Owner MOTOREN UND TURBINEN UNION MUNCHEN GMBH
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