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Internal combustion engine, control device and method for internal combustion engine

A technology for control devices and internal combustion engines, which is applied in engine control, internal combustion piston engines, combustion engines, etc. It can solve the problems of surge, inability to discharge gas for combustion, and failure to consider the start of internal combustion engines, etc., to achieve the effect of improving reliability

Active Publication Date: 2020-09-22
MITSUBISHI HEAVY IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Then, the combustion gas that is pressurized and sent to the cylinder by the compressor cannot be discharged from the cylinder of the internal combustion engine at a time earlier than when the internal combustion engine is started, and thus surge may occur.
In addition, as a technique for suppressing the occurrence of surge, there is the technique described in the above-mentioned Patent Document 2, but this technique does not take into account the

Method used

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  • Internal combustion engine, control device and method for internal combustion engine
  • Internal combustion engine, control device and method for internal combustion engine
  • Internal combustion engine, control device and method for internal combustion engine

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no. 1 approach

[0052] figure 1 is a schematic configuration diagram showing the internal combustion engine of the first embodiment, figure 2 It is a sectional view showing a cylinder part in an internal combustion engine.

[0053] In the first embodiment, if figure 1 As shown, a marine diesel engine 10 as an internal combustion engine includes a diesel engine main body 11 , an exhaust turbocharger (supercharger) 12 , and a control device 40 . The main body 11 of the diesel engine is provided with a plurality of cylinder parts 13, and each cylinder part 13 is provided with a piston 51 discussed later (refer to figure 2 ), each piston 51 is not shown, but the lower part is connected with the crankshaft by the crosshead.

[0054] The cylinder portion 13 is connected to the scavenging cylinder 15 via the scavenging port 14 , and is connected to the exhaust manifold 17 via the exhaust port 16 . The scavenging cylinder 15 is connected to a compressor (compressor) 21 of the exhaust turbocharg...

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Abstract

Provided are a control device and method for an internal combustion engine, wherein when the control device (40) drives an exhaust turbine supercharger (12) by driving an electric power generator (32) before causing an injector (19) to be driven during startup of a diesel engine body (11), the control device (40) drives an exhaust valve opening / closing device (54) to open an exhaust valve (18) before the point in time when the rotational speed of the exhaust turbine supercharger (12) reaches a surging rotational speed that has been set in advance.

Description

technical field [0001] The present invention relates to an internal combustion engine equipped with a supercharger, a control device and a method for the internal combustion engine. Background technique [0002] For example, in order to improve fuel economy and reduce CO in the exhaust gas, an internal combustion engine mounted on a ship 2 And the supercharger is fixedly installed. This supercharger is used to increase the output of the internal combustion engine by driving a turbine and a compressor with exhaust gas discharged from the internal combustion engine, and compressing and supplying combustion gas to the internal combustion engine. In addition, there is an exhaust turbocharger in which a motor generator is directly connected to the rotor shaft of the supercharger, and the rotor shaft is driven and rotated by the motor generator to rotate the compressor and the turbine. The remaining energy of the drive is used to generate electricity by the generator. [0003] ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B39/16F02B37/10F02D23/00
CPCF02B37/10F02B39/16F02D23/00Y02T10/12F02D23/005
Inventor 平林浩彰三柳晃洋
Owner MITSUBISHI HEAVY IND LTD
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