Bi-fuel gasoline and low pressure gas fuel system and method of operation
First Claim
1. A multi-fuel system for an internal combustion engine having a plurality of combustion chambers, the multi-fuel system comprising:
- a multi-fuel tank adapted to receive one of a liquid fuel, a low pressure gaseous fuel or a mixture thereof that forms a fuel mixture in the multi-fuel tank;
a fuel supply rail adapted to receive the liquid fuel, the low pressure gaseous fuel or the mixture thereof from the fuel tank;
a fuel injector fluidly connecting the fuel supply rail to each of the plurality of combustion chambers so that the combustion chamber operates with only one of the liquid fuel, the low pressure gaseous fuel or a mixture thereof, wherein the fuel mixture is provided to each fuel injector for injection into each respective combustion chamber.
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Accused Products
Abstract
A fuel system for an internal combustion engine having a plurality of combustion chambers is disclosed. The fuel system includes a liquid fuel and a low pressurize gaseous fuel. The fuel system further includes a fuel tank, with the liquid fuel and the low pressurize gaseous fuel forming a fuel mixture in the fuel tank. A single fuel supply rail is fluidly connected to the fuel tank and a fuel injector fluidly connects the single fuel supply rail to each of the plurality of combustion chambers. The fuel mixture is provided to each fuel injector for injection into each respective combustion chamber. A method of operating the fuel system is also disclosed.
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Citations
14 Claims
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1. A multi-fuel system for an internal combustion engine having a plurality of combustion chambers, the multi-fuel system comprising:
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a multi-fuel tank adapted to receive one of a liquid fuel, a low pressure gaseous fuel or a mixture thereof that forms a fuel mixture in the multi-fuel tank;
a fuel supply rail adapted to receive the liquid fuel, the low pressure gaseous fuel or the mixture thereof from the fuel tank;
a fuel injector fluidly connecting the fuel supply rail to each of the plurality of combustion chambers so that the combustion chamber operates with only one of the liquid fuel, the low pressure gaseous fuel or a mixture thereof, wherein the fuel mixture is provided to each fuel injector for injection into each respective combustion chamber. - View Dependent Claims (2, 3, 4, 5)
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6. A multi-fuel system for an internal combustion engine having a plurality of combustion chambers, the multi-fuel system comprising:
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means for receiving one of a liquid fuel, a low pressure gaseous fuel or a mixture thereof;
means for delivering one of the liquid fuel, the low pressure gaseous fuel or the mixture thereof from the multi-fuel tank; and
means for injecting one of the liquid fuel, the low pressure gaseous fuel or the mixture thereof to each of the plurality of combustion chambers so that each of combustion chambers operates with only one of the liquid fuel, the low pressure gaseous fuel or a mixture thereof. - View Dependent Claims (7, 8, 9, 10)
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11. A method of operating a multi-fuel system comprising a common fuel tank, a fuel supply rail, a plurality of fuel injectors, each fuel injector being coupled to a combustion chamber of an internal combustion engine and a single fuel return rail, the method comprising:
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receiving one of a liquid fuel, a low pressure gaseous fuel or a mixture thereof in the common fuel tank;
delivering fuel having one of the liquid fuel, low pressure gaseous fuel or mixture thereof from the common fuel tank through the fuel supply rail to a plurality of fuel injectors;
delivering at least part of the fuel from the common fuel tank into each of the plurality of fuel injectors such that the combustion chamber operates with only one of the liquid fuel, the low pressure gaseous fuel or a mixture thereof;
delivering a remaining part of the fuel to a single fuel return rail; and
returning the remaining part of the fuel to the common tank. - View Dependent Claims (12, 13, 14)
measuring a quality of the fuel and sending a quality signal corresponding to a quality of the fuel to an electronic control unit.
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13. The method according to claim 12, further comprising sending a control signal to each of the fuel injectors based on the quality signal.
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14. The method according to claim 12, wherein measuring the quality
Specification