Diagnosis system of internal combustion engine
US-2016160778-A1 · Jun 9, 2016 · US
Vehicle control system for internal combustion engine
US9885304B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9885304-B2 |
| Application number | US-201415519902-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 2, 2014 |
| Priority date | Dec 2, 2014 |
| Publication date | Feb 6, 2018 |
| Grant date | Feb 6, 2018 |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
A vehicle control system for an internal combustion engine having a fuel injection valve for injecting fuel directly into a combustion chamber includes a controller configured to perform a fuel cut-off when a predetermined fuel cut-off condition is met during travel of the vehicle to thereby stop fuel injection from the fuel injection valve. The controller is configured to resume the fuel injection from the fuel injection valve when a predetermined fuel cut-off recovery condition is met during the fuel cut-off. The controller is configured, upon elapse of a predetermined time that is required for a wall temperature of the combustion chamber to rise after resuming the fuel injection from the fuel injection valve, to perform a rich spike that temporarily increases the fuel injection amount from the fuel injection valve.
First claim
Opening claim text (preview).
The invention claimed is: 1. A vehicle control system for an internal combustion engine having a fuel injection valve for injecting fuel directly into a combustion chamber, comprising: a controller configured to perform a fuel cut-off when a predetermined fuel cut-off condition is met during travel of the vehicle to thereby stop fuel injection from the fuel injection valve, and wherein the controller is configured to resume the fuel injection from the fuel injection valve when a predetermined fuel cut-off recovery condition is met during the fuel cut-off, and wherein the controller is configured, upon elapse of a predetermined time that is required for a wall temperature of the combustion chamber to rise after resuming the fuel injection from the fuel injection valve, to perform a rich spike that temporarily increases the fuel injection amount from the fuel injection valve. 2. The vehicle control system according to claim 1 , wherein, as a fuel cut-off period is longer, the predetermined time is configured to be longer. 3. The vehicle control system according to claim 1 , wherein, as a wall temperature of the combustion chamber is lower, the predetermined time is configured to be longer. 4. The vehicle control system according to claim 1 , wherein, during a period between when the fuel cut-off ends and when the predetermined time has elapsed, the ignition timing is configured to be advanced. 5. The vehicle control system according to claim 4 , wherein, as the fuel cut-off period is longer, the ignition timing advance amount is configured to be larger. 6. The vehicle control system according to claim 4 , when the internal combustion engine is in a high-load operating state, the ignition timing is prohibited from being advanced from the fuel cut-off termination until elapse of the predetermined time. 7. A vehicle control system for an internal combustion engine having a fuel injection valve for injecting fuel directly into a combustion chamber, comprising: a controller configured to perform a fuel cut-off when a predetermined fuel cut-off condition is met during traveling of the vehicle to stop fuel injection from the fuel injection valve, wherein the controller is configured to resume the fuel injection from the fuel injection valve when a predetermined fuel cut-off recovery condition is met during the fuel cut-off, wherein the controller is configured, upon elapse of a predetermined time after resuming the fuel injection from the fuel injection valve, to perform a rich spike operation that temporarily increases the fuel injection amount from the fuel injection valve, and wherein, as a fuel cut-off period is longer, the predetermined time is configured to be longer.
Assignees
Inventors
Classifications
for injecting directly into the cylinder · CPC title
Engine temperature · CPC title
using electrical means · CPC title
- F02D41/126Primary
transitional corrections at the end of the cut-off period · CPC title
with particular means during a transient phase, e.g. acceleration, deceleration, gear change (during starting F02P5/1506) · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9885304B2 cover?
- A vehicle control system for an internal combustion engine having a fuel injection valve for injecting fuel directly into a combustion chamber includes a controller configured to perform a fuel cut-off when a predetermined fuel cut-off condition is met during travel of the vehicle to thereby stop fuel injection from the fuel injection valve. The controller is configured to resume the fuel injec…
- Who is the assignee on this patent?
- Nissan Motor
- What technology area does this patent fall under?
- Primary CPC classification F02D41/126. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Feb 06 2018 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 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).