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US 12,729,661 B2Granted
Fuel pump shutoff valve for liquidfied petroleum injection engine
AssigneesHyundai Motor Company, Kia Corporation
InventorsChang Han Kim, Man Seok Oh, Seung Hoon Choi, Seung Yup Oh
Life of this patent
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Abstract
A shutoff valve structure of a liquefied petroleum injection (LPI) engine includes an operation valve disposed within a pump housing in a fuel pump and configured to allow or block the flow of fuel from the fuel pump. The shutoff valve structure includes an extension including a knob disposed outside the pump housing and connected to the operation valve by being extended into the pump housing. The operation valve is operable by the knob.
Claims20
A valve structure comprising:
- an operation valve disposed within a pump housing of a fuel pump and configured to control a flow of fuel from the fuel pump;
- and
- an extension comprising a knob disposed outside the pump housing and connected to the operation valve by being extended into the pump housing, wherein the operation valve is operable by the knob,
- wherein the operation valve is configured to block the flow of the fuel by rotating together with the extension rotating in a first direction to move in a first axial direction of the operation valve.
1 more element
A fuel supply system comprising:
- a liquefied petroleum gas (LPG) tank where LPG is stored;
- a liquefied petroleum injection (LPI) engine to which LPG is supplied from the LPG tank;
- and
- a fuel pump installed in the LPG tank and configured to pump the LPG stored in the LPG tank to the LPI engine,
- wherein the fuel pump comprises:
- an operation valve disposed within a pump housing in the fuel pump and configured to control a flow of fuel from the fuel pump;
- and
- an extension comprising a knob disposed outside the pump housing and connected to the operation valve by being extended into the pump housing, wherein the operation valve is operable by the knob, and
- wherein the extension comprises:
- a base mounted on an external surface of the pump housing;
- a rotatable rod extending through the base into the pump housing, wherein a first end of the rotatable rod is connected to the knob;
- and
- a hook mounted to a second end of the rotatable rod and connected to the operation valve.
10 more elements
Dependencies are inferred from the claim text.