IP Library › Patent Application 12280960
Patent Application
App. No. 12/280,960

ARRANGEMENT AND METHOD TO OPERATE A COMBUSTION ENGINE WITH TWO DIFFERENT TYPES OF FUEL

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Quick Facts
Patent No.
US None
App. No.
12/280,960
Filed
Dec 29, 2008
Art Unit
3783
USPC
123/575
Abstract

An arrangement and a method are provided for a combustion engine which can be powered with a first and a second type of fuel and the first type of fuel can sufficiently lubricate the valve seating of the combustion engine. The arrangement includes, but is not limited to two fuel circuits that are at least partially allocated to the different types of fuel as well as at least one electronic control device, which controls the operation of the combustion engine with the first type of fuel and also with the second type of fuel. The operation of the combustion engine is controlled in a way that the first type of fuel is fed to the combustion engine in selectable intervals.

Claims (31)

1 . A combustion engine for a vehicle, the combustion engine powered with a first type of fuel and a second type of fuel, comprising:

at least two fuel circuits at least partially allocated to the first type of fuel and second type of fuel; and

at least one electronic control device adapted to control an operation of the at least two fuel circuits to feed the first type of fuel to the combustion engine during selectable intervals.

2 . The combustion engine according to claim 1 ,

wherein only the first type of fuel is fed to the combustion engine during the selectable intervals.

3 . The combustion engine according to claim 1 ,

wherein the first type of fuel and the second type of fuel are at least substantially simultaneously fed to the combustion engine during the selectable intervals.

4 . The combustion engine according to claim 1 ,

wherein the first type of fuel is Gas and the second type of fuel is Liquified Petroleum Gas (LPG).

5 . The combustion engine according to claims 1 ,

wherein the first type of fuel is Gas and the second type of fuel is Compressed Natural Gas (CNG).

6 . The combustion engine according to claim 1 ,

wherein the selectable intervals are prescribed as time periods.

7 . The combustion engine according to claims 1 ,

wherein the selectable intervals are prescribed as rotations of the combustion engine.

8 . (canceled)

9 . A method for operating a combustion engine for a vehicle, the combustion engine powered with a first type of fuel and a second type of fuel, comprising the steps of:

feeding the second type of fuel to the combustion engine; and

feeding the first type of fuel to the combustion engine during the selectable intervals.

10 . The method according to claim 9 ,

further comprising the steps of ceasing to feed the second type of fuel to the combustion engine during the selectable intervals.

11 . The method according to claim 9 ,

wherein the first type of fuel and the second type of fuel are substantially simultaneously fed to the combustion engine during the selectable intervals.

12 . The method according to one of the claims 9 ,

wherein gas is the first type of fuel and the second type is fuel Liquified Petroleum Gas (LPG).

13 . The method according to claims 9 ,

wherein gas is the first type of fuel and the second type of fuel is Compressed Natural Gas (CNG).

14 . The method according to claim 9 ,

wherein the selectable intervals are specified as time periods.

15 . The method according to one of the claim 9 ,

wherein the selectable intervals are specified as rotations of the combustion engine.

Assignments (11)
CHANGE OF NAME Recorded Feb 10, 2011
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 025781/0245 →
SECURITY AGREEMENT Recorded Nov 8, 2010
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: WILMINGTON TRUST COMPANY
Reel/Frame 025324/0515 →
RELEASE OF SECURITY INTEREST Recorded Nov 5, 2010
From: UAW RETIREE MEDICAL BENEFITS TRUST
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025315/0046 →
RELEASE OF SECURITY INTEREST Recorded Nov 4, 2010
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 025245/0909 →
SECURITY AGREEMENT Recorded Aug 28, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UAW RETIREE MEDICAL BENEFITS TRUST
Reel/Frame 023162/0237 →
SECURITY AGREEMENT Recorded Aug 27, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 023156/0313 →
RELEASE OF SECURITY INTEREST Recorded Aug 21, 2009
From: UNITED STATES DEPARTMENT OF THE TREASURY
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023126/0914 →
RELEASE OF SECURITY INTEREST Recorded Aug 21, 2009
From: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 023155/0769 →
SECURITY AGREEMENT Recorded Apr 16, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: CITICORP USA, INC. AS AGENT FOR BANK PRIORITY SECURED PARTIES; CITICORP USA, INC. AS AGENT FOR HEDGE PRIORITY SECURED PARTIES
Reel/Frame 022554/0538 →
SECURITY AGREEMENT Recorded Feb 4, 2009
From: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
To: UNITED STATES DEPARTMENT OF THE TREASURY
Reel/Frame 022201/0448 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Dec 31, 2008
From: HAUDEL, ELMAR
To: GM GLOBAL TECHNOLOGY OPERATIONS, INC.
Reel/Frame 022046/0882 →