IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0790187
(2001-02-21)
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발명자
/ 주소 |
- Fabre, Laurent
- Calvairac, Pierre
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출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
16 |
초록
▼
A method of diagnosing components used for leak detection in a closed vapor handling system of an automotive vehicle, implemented by a system, the method including providing leak detection components including a pressure switch that moves at a given relative vacuum, a control valve that operates to
A method of diagnosing components used for leak detection in a closed vapor handling system of an automotive vehicle, implemented by a system, the method including providing leak detection components including a pressure switch that moves at a given relative vacuum, a control valve that operates to allow and prevent flow therethrough, and a shut off valve that operates to allow and prevent flow therethrough, running an engine, determining whether the pressure switch is closed, purging a canister, specifying a fail condition if the control valve is inoperative after purging, ascertaining whether the control valve is inoperative in a flow-through condition or inoperative in a non-flow-through condition if a fail condition is specified, specifying a pass condition if the control valve is functioning after purging, determining whether the shut off valve and pressure switch are malfunctioning if a pass condition is specified based on whether the pressure switch is open, and displaying an error if a component is malfunctioning. The system includes a pressure switch, a control valve, a shut off valve, and a processor operatively coupled to the pressure sensing element, the control valve, and the shut off valve and receiving pressure signals from the pressure sensing element and sending signals to the control valve and the shut off valve, wherein the processor runs an engine, determines whether the pressure switch is closed, purges a canister, specifies a fail condition if the control valve is inoperative, ascertains whether the control valve is inoperative in a flow-through condition or inoperative in a non-flow-through condition, specifies a pass condition if the control valve is functioning, determines whether the shut off valve and the pressure switch are malfunctioning, and displays an error if at least one of the pressure switch, the shut off valve, and the control valve is malfunctioning.
대표청구항
▼
A method of diagnosing components used for leak detection in a closed vapor handling system of an automotive vehicle, implemented by a system, the method including providing leak detection components including a pressure switch that moves at a given relative vacuum, a control valve that operates to
A method of diagnosing components used for leak detection in a closed vapor handling system of an automotive vehicle, implemented by a system, the method including providing leak detection components including a pressure switch that moves at a given relative vacuum, a control valve that operates to allow and prevent flow therethrough, and a shut off valve that operates to allow and prevent flow therethrough, running an engine, determining whether the pressure switch is closed, purging a canister, specifying a fail condition if the control valve is inoperative after purging, ascertaining whether the control valve is inoperative in a flow-through condition or inoperative in a non-flow-through condition if a fail condition is specified, specifying a pass condition if the control valve is functioning after purging, determining whether the shut off valve and pressure switch are malfunctioning if a pass condition is specified based on whether the pressure switch is open, and displaying an error if a component is malfunctioning. The system includes a pressure switch, a control valve, a shut off valve, and a processor operatively coupled to the pressure sensing element, the control valve, and the shut off valve and receiving pressure signals from the pressure sensing element and sending signals to the control valve and the shut off valve, wherein the processor runs an engine, determines whether the pressure switch is closed, purges a canister, specifies a fail condition if the control valve is inoperative, ascertains whether the control valve is inoperative in a flow-through condition or inoperative in a non-flow-through condition, specifies a pass condition if the control valve is functioning, determines whether the shut off valve and the pressure switch are malfunctioning, and displays an error if at least one of the pressure switch, the shut off valve, and the control valve is malfunctioning. aid frame coupled with said outer ram member for displacement of said outer ram member to shape a workpiece in said tool in a first operational state of said eccentric drive; a toggle drive on said frame coupled with said inner ram member for displacement thereof independently of displacement of said outer ram member; and pressure means receivable in said tool and aligned with said inner ram member and with said inner tool Part for coupling said inner ram member to said inner tool part, said eccentric drive being constructed and arranged to displace both of said ram members in a second operational state of said eccentric drive. 2. The double-acting metal forming machine defined in claim 1 wherein said eccentric drive comprises a crankshaft mounted on said frame above said ram and plurality of connecting rods connecting eccentrics of said shaft with said outer ram member on opposite sides of said inner ram member, said pressure means being a plurality of pressure pins. 3. The double-acting metal forming machine defined in claim 2 wherein said toggle drive includes a lever mounted on said shaft, and a toggle linkage including a pair of articulated links pivotally connected at opposite ends to said inner ram member and to said frame, said lever being pivotally connected to one of said links. 4. The double-acting metal forming machine defined in claim 3 constituting a drop forging machine.
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