Method and device for operating an internal combustion engine
US-2024287927-A1 · Aug 29, 2024 · US
Control apparatus for internal combustion engine
US9109520B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9109520-B2 |
| Application number | US-201013883584-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 18, 2010 |
| Priority date | Nov 18, 2010 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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- Title
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Abstract
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Provided is a control apparatus for an internal combustion engine, which can determine whether or not there is a failure concerning a switching of an operational state of an intake valve, in the internal combustion engine that includes a valve stop mechanism that is capable of switching the operational state of the intake valve between a valve operating state and a valve closed/stopped state, without the need of adding a new sensor for the failure determination. An intake variable valve operating apparatus ( 66 ) is provided that includes a valve stop mechanism capable of switching the operational state of the intake valve ( 62 ) between the valve operating state and the valve closed/stopped state. A crank angle sensor ( 72 ) is provided for detecting the crank angle of the internal combustion engine ( 12 ). An intake pressure sensor ( 56 ) is provided for detecting the actual intake pressure pim. It is determined whether or not there is a failure concerning the switching of the operational state of the intake valve ( 62 ) between the valve operating state and the valve closed/stopped state by the valve stop mechanism, based on an intake pressure difference dlpm (first difference) between the actual intake pressure pim and the pseudo intake pressure pmcrt at a predetermined crank angle (for example, 60° CA after the top dead center in each cylinder).
First claim
Opening claim text (preview).
The invention claimed is: 1. A control apparatus for an internal combustion engine, comprising: a valve stop mechanism that is capable of switching an operational state of an intake valve between a valve operating state and a valve closed/stopped state; a crank angle sensor for detecting a crank angle of an internal combustion engine; an intake pressure sensor for detecting an actual intake pressure at an integral part of an intake passage that leads to a plurality of cylinder…
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Cross-Sectional Technologies · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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- What does patent US9109520B2 cover?
- Provided is a control apparatus for an internal combustion engine, which can determine whether or not there is a failure concerning a switching of an operational state of an intake valve, in the internal combustion engine that includes a valve stop mechanism that is capable of switching the operational state of the intake valve between a valve operating state and a valve closed/stopped state, w…
- Who is the assignee on this patent?
- Nakagawa Norihisa, Nishikiori Takashi, Toyota Motor Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification F02D41/0002. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Aug 18 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).