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Control system of internal combustion engine

A control device, a technology for an internal combustion engine, which is applied in engine control, fuel injection control, internal combustion piston engine, etc., and can solve problems such as delay in compression start timing

Inactive Publication Date: 2017-06-30
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The device disclosed in Patent Document 1 (hereinafter referred to as "conventional device") is configured by setting the valve closing timing of the intake valve to be after the bottom dead center, and part of the air once sucked into the cylinder push back into the intake port to delay the start of compression

Method used

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  • Control system of internal combustion engine
  • Control system of internal combustion engine
  • Control system of internal combustion engine

Examples

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Embodiment Construction

[0022] Hereinafter, a "control device for an internal combustion engine (hereinafter, sometimes referred to as 'this control device')" according to the present invention will be described with reference to the drawings.

[0023] (Schematic composition)

[0024] This control device is suitable for figure 1 A spark ignition type multi-cylinder internal combustion engine 10 (hereinafter, referred to as "internal combustion engine") is shown. also, figure 1 Only the cross section of a specific cylinder is shown in the figure, and other cylinders have the same configuration.

[0025] This internal combustion engine 10 includes: a cylinder portion 20 , a cylinder head 30 fixed above the cylinder portion 20 , an air intake system 40 for supplying air to the cylinder portion 20 , and an exhaust system 40 for supplying air from the cylinder portion 20 Exhaust system 50 released to the outside.

[0026] The cylinder unit 20 includes a cylinder 21 , a piston 22 , a connecting rod 23 ...

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PUM

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Abstract

A control system according to one aspect of the present invention is applied to an internal combustion engine. The engine 10 comprises a port injector 39 and an intake valve driving device 33 capable of changing the closing timing of the intake valve 32. The engine10, if an execution condition for performing a fuel cut control is satisfied when performing an Atkinson cycle, executes the fuel cut control after advancing the closing timing of the intake valve. As a result, by reducing the amount of the fuel which is blown back to the inside of the intake passage in a period where the intake valve is open after intake bottom dead center, the amount of the fuel which flows into the exhaust passage as unburned gas when the fuel cut control is executed can be reduced.

Description

technical field [0001] The present invention relates to a control device for an internal combustion engine including an intake valve driving device capable of changing the valve closing timing of an intake valve. Background technique [0002] Conventionally, there is known a control device for a spark ignition type internal combustion engine (for example, refer to Patent Document 1), which includes a port injection valve that injects fuel into an intake port and an intake valve that can change the valve closing timing of the intake valve. The drive unit performs an Atkinson cycle in which the efficiency of the internal combustion engine is improved by increasing the expansion ratio compared to the compression ratio. [0003] The device disclosed in Patent Document 1 (hereinafter referred to as "conventional device") is configured by setting the valve closing timing of the intake valve to be after the bottom dead center, and part of the air once sucked into the cylinder Push...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D41/00F02D41/32
CPCF02D41/0002F02D41/32F02D2041/001F02D2200/602F02D41/123F02D13/0269Y02T10/12F02D13/0234F02D41/3005
Inventor 中坂幸博
Owner TOYOTA JIDOSHA KK
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