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Control device for internal combustion engine

A control device, a technology for an internal combustion engine, applied in the directions of engine control, internal combustion piston engine, electrical control, etc., can solve the problems of deterioration of exhaust characteristics, deterioration of fuel efficiency, etc.

Active Publication Date: 2020-02-14
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Since the internal combustion engine shown in Patent Document 1 is a port-injection internal combustion engine that injects fuel into the intake port, deterioration in fuel efficiency and deterioration in exhaust characteristics due to an increase in the blow-off amount during the overlap period are significant

Method used

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  • Control device for internal combustion engine
  • Control device for internal combustion engine
  • Control device for internal combustion engine

Examples

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Embodiment Construction

[0028] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0029] figure 1 It is a figure which shows typically the structure of the internal combustion engine which concerns on one Embodiment of this invention. The internal combustion engine (hereinafter referred to as “engine”) 1 is a direct injection engine having four cylinders 6 and injecting fuel directly into the combustion chambers of the cylinders 6 , and each cylinder 6 is provided with a fuel injection valve 7 , a spark plug 8 and an intake valve and exhaust valve (not shown).

[0030] The engine 1 includes an intake passage 2 , an exhaust passage 10 , a turbocharger (supercharger) 12 , and a valve operation phase variable mechanism 20 . The intake passage 2 is connected to a surge tank 4 , and the surge tank 4 is connected to the combustion chamber of each cylinder 6 through an intake manifold 5 . An intercooler 3 for cooling the pressurized air and a throttle va...

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PUM

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Abstract

A control device for an internal combustion engine includes circuitry. The circuitry is configured to determine whether a running state of the internal combustion engine is in an auxiliary driving state in which an electric motor drives a compressor. The circuitry is configured to increase an opening degree of a waste gate valve when the running state is determined to be in the auxiliary driving state. The circuitry is configured to control a valve actuation phase variable mechanism to increase an overlap period in which a valve opening period of an intake valve and a valve opening period of an exhaust valve are overlapped with each other when the running state is determined to be in the auxiliary driving state.

Description

technical field [0001] The present invention relates to a control device for an internal combustion engine having a supercharger capable of assisting the drive of an electric motor and injecting fuel directly into a combustion chamber, and more particularly to a valve operation having a change in the operating phase of an intake valve and / or an exhaust valve of the internal combustion engine A control device for an internal combustion engine of a phase variable mechanism. Background technique [0002] Patent Document 1 shows a control device for an internal combustion engine including a valve operation variable mechanism and a supercharger with an electric motor. When the electric motor is operated for supercharging, since the differential pressure between the intake pressure and the exhaust pressure (= intake pressure - exhaust pressure) increases, there is fuel that flows into the combustion chamber and the intake air is directly ignited without supporting combustion. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D43/00
CPCF02B37/12F02B37/183F02B2037/122F02D13/0261F02D37/02F02D41/0002F02D41/0007F02D2041/001F02B25/145F02B37/10F02B37/14F02B37/18F02D41/10F02D41/18F02D2041/389F02D2200/0406Y02T10/12
Inventor 铃木雅树长岛正明上野将树乙部隆志
Owner HONDA MOTOR CO LTD
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