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spark ignition multi-cylinder engine

A spark ignition, engine technology, applied in spark ignition controllers, engine ignition, engine components, etc., can solve problems such as vibration

Inactive Publication Date: 2016-08-17
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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  • spark ignition multi-cylinder engine

Examples

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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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Abstract

The invention provides a spark ignition type multi-cylinder engine. When the oil pressure is below a specified value, the valve phase variable mechanism locks the valve closing period of the intake valve at the most advanced period and the most delayed period after the intake bottom dead center. The specified period in the middle of the period and to enable a cold start of the engine. The starting device (engine controller) delays the fuel injection timing of the cylinder that is in the intake stroke when the engine is stopped, among the plurality of cylinders, when the temperature state at the time of starting the engine is a high temperature state higher than a predetermined temperature. The initial stage of the expansion stroke after the compression top dead center, and the ignition timing is set at the initial stage of the expansion stroke after the end of fuel injection. In addition, the starting device does not delay the valve closing timing of the intake valve beyond the predetermined timing until the start of the engine is completed after the oil pressure supplied to the valve phase variable mechanism exceeds a predetermined value.

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 Patents(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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