Powertrain for Hybrid Vehicle Having Dedicated EGR
US-2015377188-A1 · Dec 31, 2015 · US
Controller for internal combustion engine
US9109524B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9109524-B2 |
| Application number | US-201313894898-A |
| Country | US |
| Kind code | B2 |
| Filing date | May 15, 2013 |
| Priority date | May 29, 2012 |
| Publication date | Aug 18, 2015 |
| Grant date | Aug 18, 2015 |
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Abstract
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A controller for internal combustion engine includes a rotation number detecting section to detect engine rotation number and an air-fuel ratio detecting section to detect an air-fuel ratio (A/F) of air-fuel mixture and is configured to perform leaning control of the A/F. The controller further includes a rotation number difference calculating section to calculate a difference between a rotation number variation value of a worst cylinder specified as having largest rotation number variation based on the detected rotation number detected and an average value of rotation number variation values of remaining cylinders other than the worst cylinder; an estimated imbalance rate calculating section to calculate an estimated imbalance rate based on the A/F detected by the air-fuel ratio detecting section; and a lean abnormality detecting section to detect lean imbalance abnormality in a specific cylinder based on the calculated rotation number difference and the calculated estimated imbalance rate.
First claim
Opening claim text (preview).
The invention claimed is: 1. A controller for internal combustion engine, including a rotation number detecting section to detect engine rotation number and an air-fuel ratio detecting section to detect an air-fuel ratio (A/F) of air-fuel mixture, the controller being configured to perform leaning control of the A/F, the controller further including: a rotation number difference calculating section to calculate a difference between a rotation number variation value of a worst cyli…
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Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Cross-Sectional Technologies · mapped topic
- F02D41/0085Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9109524B2 cover?
- A controller for internal combustion engine includes a rotation number detecting section to detect engine rotation number and an air-fuel ratio detecting section to detect an air-fuel ratio (A/F) of air-fuel mixture and is configured to perform leaning control of the A/F. The controller further includes a rotation number difference calculating section to calculate a difference between a rotatio…
- Who is the assignee on this patent?
- Ujiie Shigemichi, Tamura Yu, Sasaki Toshitake, and 4 more
- What technology area does this patent fall under?
- Primary CPC classification F02D41/0085. 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).