Device and method for controlling an internal combustion engine

A control device and control method technology, applied in engine control, internal combustion piston engine, electrical control, etc., can solve the problems of adsorption and purification performance reduction, and achieve the effect of improving exhaust emissions

Inactive Publication Date: 2015-08-19
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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  • Device and method for controlling an internal combustion engine
  • Device and method for controlling an 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 present invention is intended to provide a technique of improving exhaust emissions at the time of starting up of an internal combustion engine, without decreasing the performance of a catalyst at the time of the engine starting up. The present invention is provided with the catalyst that is arranged in an exhaust passage of the internal combustion engine in which a plurality of kinds of fuels are able to be used, and serves to adsorb and remove exhaust gas components discharged from the internal combustion engine, wherein in cases where among the plurality of kinds of fuels, a first fuel is used in which unburnt fuel components thereof are easily adsorbed to the catalyst, at the time when a request is made for stopping the internal combustion engine, said first fuel is changed to a second fuel thereby to operate said internal combustion engine until said internal combustion engine is stopped.

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 Patents(China)
IPC IPC(8): F02D19/06
CPCY02T10/36F02D19/0615F02D19/0668F02D19/0647F02D19/0692F02D41/0255Y02T10/30
Inventor 中山裕介木所徹泽田裕
Owner TOYOTA JIDOSHA KK
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