Control device and control method for internal combustion engine

A technology of a control device and a control method, applied in engine control, internal combustion piston engine, electrical control and other directions, can solve the problems of reduced adsorption and purification performance, and achieve the effect of improving exhaust emissions

Inactive Publication Date: 2013-05-01
TOYOTA JIDOSHA KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The catalyst is deactivated when the internal combustion engine is started, and the performance of adsorption and purification is reduced

Method used

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  • Control device and control method for internal combustion engine
  • Control device and control method for internal combustion engine

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Embodiment 1

[0025] figure 1 is a diagram showing a schematic configuration of an internal combustion engine according to Embodiment 1 of the present invention. exist figure 1 Among the fuels for the internal combustion engine 1 shown, the following liquid fuels can be used, that is, petroleum liquid fuels such as gasoline, and alcohols such as ethanol or methanol mixed with petroleum liquid fuels such as gasoline, or MTBE (methyl tertiary butyl) can be used. ether: Methyl tert-butyl ether), mixed liquid fuels of oxygenated fuels, etc. In addition, a gaseous fuel such as compressed natural gas (CNG (Compressed Natural Gas)) may be used as the fuel of the internal combustion engine 1 . In this way, the internal combustion engine 1 of the present invention can use various fuels. In this embodiment, the case where gasoline is used as the liquid fuel and CNG is used as the gaseous fuel is cited as an example. Gasoline corresponds to the first fuel of the present invention, and CNG correspo...

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Abstract

The invention relates to a control device and a control method for internal combustion engine. The objective of this invention is to provide a technology for improving exhaust emissions at engine startup without reducing the performance of the catalyst at engine startup. This invention is equipped with a catalyst which is provided in the exhaust passage of an internal combustion engine capable of using multiple types of fuels and which adsorbs and purifies the exhaust component discharged from the internal combustion engine. When there is a request to stop the internal combustion engine and, of the multiple fuel types, a first fuel the unburned component of which is easily adsorbed by the catalyst is being used, a switch is made from the first fuel to a second fuel, and running continues until the internal combustion engine stops.

Description

technical field [0001] The invention relates to a control device of an internal combustion engine and a control method of the internal combustion engine. Background technique [0002] In the exhaust passage of the internal combustion engine, a catalyst for adsorbing and purifying exhaust components discharged from the internal combustion engine is provided. The catalyst is in a deactivated state when the internal combustion engine is started, and the performance of adsorption and purification decreases. Therefore, a technique has been disclosed in which gaseous fuel is used when the internal combustion engine is started, and the internal combustion engine is operated by switching from gaseous fuel to liquid fuel after a set time has elapsed since the start of the internal combustion engine (for example, refer to Patent Literature 1). Thus, in Patent Document 1, good startability and improvement in exhaust emission at the start of the internal combustion engine are achieved...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D19/06
CPCF02D19/0615F02D41/0255F02D19/0692Y02T10/36F02D19/0668F02D19/0647Y02T10/30
Inventor 中山裕介木所徹泽田裕
Owner TOYOTA JIDOSHA KK
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