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Starting device of spark-ignition multi-cylinder engine

A technology of spark ignition and engine, which is applied in the direction of spark ignition controller, engine ignition, engine components, etc., and can solve problems such as vibration

Inactive Publication Date: 2014-07-23
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Also, premature ignition that occurs when the engine starts can cause vibrations that can create problems

Method used

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  • Starting device of spark-ignition multi-cylinder engine
  • Starting device of spark-ignition multi-cylinder engine
  • Starting device of spark-ignition multi-cylinder engine

Examples

Experimental program
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Embodiment Construction

[0047] Embodiments of a spark ignition type multi-cylinder engine will be described below based on the drawings. The following descriptions are examples. Such as figure 1 As shown, the engine system has an engine 1 , various actuators accompanying the engine 1 , various sensors, and an engine controller 100 that controls the actuators based on signals from the sensors. This engine system includes a high compression ratio engine 1 having a geometric compression ratio of 13 to 20 (for example, 14).

[0048] Engine 1 is a spark ignition four-stroke internal combustion engine, figure 1 Although only one cylinder is shown in FIG. 1 , there are four cylinders 11 of the first to fourth cylinders arranged in-line. However, the engine to which the technology disclosed in the present invention is applicable is not limited to the in-line four-cylinder engine. The engine 1 is mounted in a vehicle such as an automobile, and its output shaft is not shown, but is connected to drive wheel...

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PUM

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Abstract

A starting device of a spark-ignition multi-cylinder engine is provided. When the supplied hydraulic pressure is lower than a predetermined value, the variable valve phase mechanism locks the close timing of the intake valve to a predetermined timing that is between the most advanced timing and the most retarded timing and enables a cold start of the engine. When the engine in the engine start is in a high temperature state in which a temperature thereof is higher than a predetermined temperature, the start controller performs retard-setting on the cylinder that is on the intake stroke at an engine stopped timing among the plurality of cylinders to set a fuel injection timing thereof to an early stage of expansion stroke, and the start controller retards an ignition timing of the cylinder to a timing in the early stage of the expansion stroke and after the fuel injection is completed.

Description

technical field [0001] The technology disclosed herein relates to spark ignition multi-cylinder engines. Background technique [0002] For example, Patent Document 1 describes an engine starter that automatically starts (that is, restarts) an engine that has been automatically stopped when a predetermined stop condition is met when a predetermined start condition is met. In order to quickly start the engine, this starter device first injects fuel into cylinders that are in the expansion stroke and compression stroke when the engine is stopped, and executes ignition to rotate the engine in the forward rotation direction, and the compression stroke follows these strokes. The cylinders that are in the intake stroke and exhaust stroke at the moment of engine stop also continue to inject fuel and perform ignition. However, when the engine is restarted, since the engine temperature is high, the air in the cylinder that is in the intake stroke when the engine is stopped reaches a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D45/00
CPCF01L1/185F01L1/24F01L2001/0537F01L2250/02F01L2250/06F01L2800/01F02N11/00F02P5/045F02P5/1506F02D41/064F02D41/065F02D41/401F02D37/02F02D2041/001F02D2200/021F02N11/0814F01L1/3442F01L2305/00Y02T10/40F02N11/08
Inventor 宫本圭一志志目宏二和田好隆高簱达也
Owner MAZDA MOTOR CORP
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