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Start control apparatus for internal combustion engine

A technology for starting control, internal combustion engine, applied in mechanical equipment, engine control, fuel injection control, etc., can solve the problems of increasing vibration, hopelessness, suppression, etc., to reduce cylinder temperature, suppress self-ignition, fuel consumption and deterioration of injection inhibiting effect

Inactive Publication Date: 2009-04-15
TOYOTA JIDOSHA KK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This self-ignition causes various problems such as increased vibration
The starting control device disclosed in JP-A No. 2004-36561 injects fuel into the cylinder during the intake stroke during the idle stop state, only to ensure the fuel quantity at the time of starting, so it cannot be expected to suppress the above-mentioned self-ignition at the time of restarting

Method used

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  • Start control apparatus for internal combustion engine
  • Start control apparatus for internal combustion engine
  • Start control apparatus for internal combustion engine

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Embodiment Construction

[0025] figure 1 is a diagram showing a schematic structure of an internal combustion engine for an automobile in which a start control apparatus according to an embodiment of the present invention is employed. exist figure 1 Among them, an internal combustion engine (hereinafter referred to as an engine) 1 is constituted by, for example, a 4-cycle engine, and includes a plurality of cylinders 2 . Incidentally, figure 1 Only a single cylinder 2 is shown, the remaining cylinders 2 having the same structure.

[0026]The phases of the pistons 3 in each cylinder 2 are mutually staggered according to the number and arrangement of the cylinders 2 . For example, in an inline four-cylinder engine having four cylinders 2 aligned in one direction, the phases of the pistons 3 are different from each other by 180 degrees in crank angle. Therefore, one of the four cylinders 2 is inevitably in the intake stroke. And, the engine 1 is configured as a port injection type engine that inject...

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Abstract

There is provided a start control apparatus for an internal combustion engine (1) which starts the engine with injecting fuel to each cylinder (2) of the internal combustion engine in an intake stroke. The apparatus comprises a stop position distinction device (20) which distinguishes a piston position at a time of a stop of the internal combustion engine, and a fuel injection amount control device (20) which specifies a cylinder in which a piston stops in the intake stroke based on a distinction result of the stop position distinction device and which increases a fuel injection amount at starting for the specified cylinder more than a fuel injection amount for other cylinders.

Description

technical field [0001] The invention relates to a device for controlling the quantity of fuel injected into cylinders of an internal combustion engine at start-up. Background technique [0002] As a start control device for a cylinder direct injection type internal combustion engine, in which the internal combustion engine is subjected to idle stop control, there is a known start control device in which fuel is injected when the fuel supply pressure during the idle stop state is lower than a predetermined pressure into each cylinder in which the piston stops during the compression stroke and the piston stops during the intake stroke followed by intake injection at restart in an attempt to start the engine (see, e.g., Japanese Patent Application Laid-Open (JP -A) No. 2004-36561). In addition, JP-A No. 2001-73774, 2000-213385, and 2202-242724 are also other publications related to the field of the present invention. [0003] When the internal combustion engine is stopped due...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/06F02D35/02
Inventor 武山雅树中村诚加藤稔黑木炼太郎
Owner TOYOTA JIDOSHA KK