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Control device of spark-ignition engine

A spark ignition type and control device technology, which is applied in the direction of electric spark ignition controller, engine control, ignition controller, etc., can solve problems such as pressure rise and combustion noise increase

Inactive Publication Date: 2014-10-01
MAZDA MOTOR CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compression ignition combustion is a combustion in which the pressure rises sharply as the engine load increases, leading to an increase in combustion noise

Method used

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  • Control device of spark-ignition engine
  • Control device of spark-ignition engine
  • Control device of spark-ignition engine

Examples

Experimental program
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Embodiment Construction

[0062] Next, an embodiment of a spark ignition type direct injection engine will be described based on the drawings. The description of the following preferred embodiments is an illustration. figure 1 , figure 2 A schematic structure of the engine (engine main body) 1 is shown. The engine 1 is a spark ignition type gasoline engine mounted on a vehicle and supplied with fuel including at least gasoline. The engine 1 has a cylinder block 11 provided with a plurality of cylinders 18 (in addition, although in figure 1 Only one cylinder is shown in the figure, but for example, four cylinders can be arranged in series), the cylinder head 12 arranged on the cylinder block 11, and the oil sump arranged on the lower side of the cylinder block 11 for storing lubricating oil shell13. A piston 14 connected to the crankshaft 15 via a connecting rod 142 is reciprocally inserted into each cylinder 18 . On the top surface of the piston 14, such as image 3 As shown enlarged in the midd...

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PUM

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Abstract

A control device of a spark-ignition engine is provided. The control device includes a main body of the engine, a fuel injection valve, an ignition plug, and a controller. According to an engine operating state, the controller switches between a compression-ignition mode in which compression-ignition combustion is performed, and a spark-ignition mode in which spark-ignition combustion is performed. The controller switches from the spark-ignition mode to the compression-ignition mode by performing in order, a first stage where an air-fuel ratio of mixture gas is set to a predetermined value and the spark-ignition combustion is performed, a second stage where the air-fuel ratio of the mixture gas is set leaner than the first stage and the compression-ignition combustion is performed, and a third stage where the air-fuel ratio of the mixture gas is set richer than the second stage and the compression-ignition combustion is performed.

Description

technical field [0001] The technology disclosed in this invention relates to control devices for spark ignition engines. Background technique [0002] For example, as described in Patent Document 1, there is known a combustion form in which the air-fuel mixture in the cylinder is compressed and ignited as a technique for achieving both improvement in exhaust emission performance and improvement in thermal efficiency. However, the compression ignition combustion is a combustion in which the pressure rises rapidly as the load on the engine increases, leading to an increase in combustion noise. Therefore, as described in Patent Document 1, even in an engine that performs compression ignition combustion, in a high-load operating range, generally, compression ignition combustion is not performed, but spark ignition combustion driven by a spark plug is performed. [0003] Patent Document 2 describes that, similarly to the engine of Patent Document 1, in an engine that performs co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02P9/00F02B9/00
CPCF02D41/3035F02D2041/3052F02D13/0207F02D41/402F02D41/3011F02D2041/001F02D41/3023F02D41/0057F02D41/3064F02B29/0437F02D13/0265F02M31/04F02M26/01F02M26/25F02M26/28Y02T10/12Y02T10/40
Inventor 高桥敏彰田贺淳一岩井浩平
Owner MAZDA MOTOR CORP
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