Dual state liquefied petroleum gas engine assembly
AssigneeGM Global Technology Operations LLC
InventorNicholas Carter
Life of this patent
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Abstract
An engine assembly may include an engine structure, an intake manifold, and a liquefied petroleum gas (LPG) fuel assembly. The engine structure may define a combustion chamber and the intake manifold may be in communication with the combustion chamber. The LPG fuel assembly may include a LPG fuel tank containing LPG fuel, a liquid LPG fuel injection system in communication with the LPG fuel tank and the combustion chamber, and a vapor LPG fuel injection system in communication with the LPG fuel tank and the intake manifold.
Claims17
A liquefied petroleum gas (LPG) fuel assembly comprising:
- a liquid LPG fuel injection system in communication with a LPG fuel tank and a combustion chamber of an engine wherein the liquid LPG fuel injection system includes a fuel injector in communication with the LPG fuel tank and in direct communication with the combustion chamber;
- and
- a vapor LPG fuel injection system in communication with the LPG fuel tank and an intake manifold of the engine.
A liquefied petroleum gas (LPG) fuel assembly comprising:
- a liquid LPG fuel injection system in communication with a LPG fuel tank and a combustion chamber of an engine;
- wherein the liquid LPG fuel injection system includes a fuel injector in communication with the LPG fuel tank and in direct communication with the combustion chamber;
- a vapor LPG fuel injection system in communication with the LPG fuel tank and an intake manifold of the engine;
- wherein the liquid LPG fuel injection system includes:
- a LPG fuel pump in communication with the LPG fuel tank;
- and
- a LPG fuel rail in communication with the LPG fuel pump and the fuel injector, wherein the LPG fuel pump is operable to provide liquid LPG fuel from the LPG fuel tank to the LPG fuel rail.
An engine assembly comprising:
- an engine structure defining a combustion chamber;
- an intake manifold in communication with the combustion chamber;
- and
- a liquefied petroleum gas (LPG) fuel assembly including:
- a LPG fuel tank containing LPG fuel;
- a liquid LPG fuel injection system in communication with the LPG fuel tank and the combustion chamber wherein the liquid LPG fuel injection system includes a fuel injector in communication with the LPG fuel tank and in direct communication with the combustion chamber;
- and
- a vapor LPG fuel injection system in communication with the LPG fuel tank and the intake manifold.
An engine assembly comprising:
- an engine structure defining a combustion chamber;
- an intake manifold in communication with the combustion chamber;
- and
- a liquefied petroleum gas (LPG) fuel assembly including:
- a LPG fuel tank containing LPG fuel;
- a liquid LPG fuel injection system in communication with the LPG fuel tank and the combustion chamber wherein the liquid LPG fuel injection system includes a fuel injector in communication with the LPG fuel tank and the combustion chamber;
- and
- a vapor LPG fuel injection system in communication with the LPG fuel tank and the intake manifold;
- wherein the liquid LPG fuel injection system includes:
- a LPG fuel pump in communication with the LPG fuel tank;
- and
- a LPG fuel rail in communication with the LPG fuel pump and the fuel injector, wherein the LPG fuel pump is operable to provide liquid LPG fuel from the LPG fuel tank to the LPG fuel rail.
A method comprising:
- providing vapor LPG fuel from a vaporizer in communication with a LPG fuel tank to an intake manifold of an engine during a first operating condition;
- and
- providing liquid LPG fuel from the LPG fuel tank to a combustion chamber of the engine during a second operating condition;
- wherein the providing liquid LPG fuel includes distributing LPG fuel to a fuel injector via a fuel rail and injecting liquid LPG fuel into the combustion chamber via the fuel injector during the second operating condition.
Dependencies are inferred from the claim text.