System and method for lubricating a fuel pump
US-9217405-B2 · Dec 22, 2015 · US
Method for monitoring a passive pressure regulation valve
US9458786B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9458786-B2 |
| Application number | US-201214115168-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 19, 2012 |
| Priority date | May 2, 2011 |
| Publication date | Oct 4, 2016 |
| Grant date | Oct 4, 2016 |
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Abstract
Official abstract text for this publication.
Proposed is a method for monitoring a passive pressure limiting valve ( 11 ) via which fuel is discharged from the rail ( 6 ) of a common rail system into the fuel tank ( 2 ), in which method, upon the detection of a defective rail pressure sensor ( 9 ), a switch is made from a rail pressure regulation mode into an emergency mode, wherein in the emergency mode, the rail pressure is successively increased until the pressure limiting valve ( 11 ) reacts, in which method, in the emergency mode, the pressure limiting valve ( 11 ) is set as open when the starting phase of the internal combustion engine has additionally been detected as having ended, and in which method, in addition, the opening duration of the pressure limiting valve ( 11 ) is monitored.
First claim
Opening claim text (preview).
The invention claimed is: 1. Method for monitoring a passive pressure limiting valve via which fuel is discharged from a rail of a common rail system into a fuel tank, wherein upon the detection of a defective rail pressure sensor, a switch is made from a rail pressure regulation mode into an emergency mode, wherein in the emergency mode, the rail pressure is gradually increased until the pressure limiting valve responds, wherein the pressure limiting valve is set as open in the em…
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Classifications
Mechanical Engineering · mapped topic
- F02D41/221Primary
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
Mechanical Engineering · mapped topic
- F02D41/38Primary
Mechanical Engineering · mapped topic
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Frequently asked questions
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- What does patent US9458786B2 cover?
- Proposed is a method for monitoring a passive pressure limiting valve ( 11 ) via which fuel is discharged from the rail ( 6 ) of a common rail system into the fuel tank ( 2 ), in which method, upon the detection of a defective rail pressure sensor ( 9 ), a switch is made from a rail pressure regulation mode into an emergency mode, wherein in the emergency mode, the rail pressure is successively…
- Who is the assignee on this patent?
- Dölker Armin, Mtu Friedrichshafen Gmbh
- What technology area does this patent fall under?
- Primary CPC classification F02D41/221. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Oct 04 2016 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).