IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0790167
(2001-02-21)
|
발명자
/ 주소 |
|
출원인 / 주소 |
|
인용정보 |
피인용 횟수 :
4 인용 특허 :
19 |
초록
▼
A method of leak detection in a closed vapor handling system of an automotive vehicle while an engine is running, implemented by a system, the method including providing a pressure sensing element that obtains at least one pressure signal, closing a control valve and a shut off valve to seal the sys
A method of leak detection in a closed vapor handling system of an automotive vehicle while an engine is running, implemented by a system, the method including providing a pressure sensing element that obtains at least one pressure signal, closing a control valve and a shut off valve to seal the system from the engine and an atmosphere, generating a vacuum by opening the control valve, analyzing the at least one pressure signal at threshold times, comparing the at least one pressure signal to at least one pressure control value, and determining a leak condition if the at least one pressure signal is not less than the at least one pressure control value. The system including a pressure sensing element, a control valve, a shut off valve, a processor operatively coupled to the pressure sensing element 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. The processor closes the control valve and the shut off valve, generates a vacuum, depressurizes the system using the vacuum, controls the vacuum by opening the control valve, analyzes the pressure signal at threshold times, compares the pressure signal to pressure control values, and determines a leak condition.
대표청구항
▼
A method of leak detection in a closed vapor handling system of an automotive vehicle while an engine is running, implemented by a system, the method including providing a pressure sensing element that obtains at least one pressure signal, closing a control valve and a shut off valve to seal the sys
A method of leak detection in a closed vapor handling system of an automotive vehicle while an engine is running, implemented by a system, the method including providing a pressure sensing element that obtains at least one pressure signal, closing a control valve and a shut off valve to seal the system from the engine and an atmosphere, generating a vacuum by opening the control valve, analyzing the at least one pressure signal at threshold times, comparing the at least one pressure signal to at least one pressure control value, and determining a leak condition if the at least one pressure signal is not less than the at least one pressure control value. The system including a pressure sensing element, a control valve, a shut off valve, a processor operatively coupled to the pressure sensing element 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. The processor closes the control valve and the shut off valve, generates a vacuum, depressurizes the system using the vacuum, controls the vacuum by opening the control valve, analyzes the pressure signal at threshold times, compares the pressure signal to pressure control values, and determines a leak condition. el removably covers the access opening on an exterior side of the door frame. Two parallel connecting links are pivotably connected both to the door frame and to the panel in a manner permitting the panel to be moved from an open position where the access opening is uncovered to a closed position where the panel covers the access opening. A frame member connects the two links together in a rigid manner. One or more threaded fasteners can be used to detachably connect the panel so that it is secured in the closed position. In one embodiment, a single screw can detachably connect the panel to a pivotable connecting frame that includes the two links. In another version, the panel can be detachably and directly connected to the door frame by fasteners. he ends thereof corresponding to the upper two holes in the fire curtain, and one stiffener designated the lowermost stiffener has holes near the ends thereof corresponding to the lower two holes in the fire curtain; (c) an upper set of curtain connectors selected from the group consisting of cable leaders and ropes, each of said curtain connectors having a first end having means for attaching to the fire curtain and a second end having a loop, each of said curtain connectors being attached their first ends to each of the two upper corners of said fire curtain at their holes; (d) a lower set of curtain connectors selected from the group consisting of cable leaders and ropes, each of said curtain connectors having a first end having means for attaching to the fire curtain and a second end having a loop, each of said curtain connectors being attached at their first ends to each of the two lower corners of said fire curtain at their holes; (e) an upper bag connector deployment bag having a mouth and a bottom, said upper bag connector deployment bag having a bag connector therein, said bag connector having a first end and a second end, said bag connector being secured near its middle to the bottom of said bag connector deployment bag, said first end and said second end of bag connector having means for attaching to the loops at the second ends of said curtain connectors attached to said upper corners of said fire curtain; and (f) a lower bag connector deployment bag having a mouth and a bottom, said lower bag connector deployment bag having a bag connector therein, said bag connector having a first end and a second end, said bag connector being secured near its middle to the bottom of said bag connector deployment bag, said first end and said second end of bag connector having means for attaching to the loops at the second ends of said curtain connectors attached to said lower corners of said fire curtain. 2. The portable fire curtain system of claim 1 wherein the bag connector is a rope and the lower bag connector deployment bag is a lower rope deployment bag, said lower rope deployment bag having a hole in the bottom thereof and a portion of said rope near its middle protrudes out of said hole, said portion of said protruding rope having a snap attached thereto for attaching a weight thereto. 3. The portable fire curtain system of claim 1 wherein said fire curtain is one elongated sheet of material which is folded and sewn together. 4. The portable fire curtain system of claim 3 wherein the fire curtain is sewn together with a fire resistant thread. 5. The portable fire curtain system of claim 3 wherein the fire curtain is made of Basofil and Kevlar weave. 6. The portable fire curtain system of claim 1 wherein said plurality of spaced stiffeners are substantially parallel to the upper and lower edges of said fire curtain. 7. The portable fire curtain system of claim 1 wherein said bag connector is rope, and: (a) said upper bag connector deployment bag is an upper rope deployment bag, said upper rope deployment bag having a central divider which separates the upper rope deployment bag into two pockets, said central divider having a top edge near the mouth of said upper rope deployment bag, and a bottom edge joined to the bottom of said upper rope deployment bag; (b) the rope is secured in the upper rope deployment bag such that substantially half its length resides in the first pocket and the other half its length resides in the second pocket, whereby tangling of the two half sections of rope is minimized; (c) said lower bag connector deployment bag is a lower rope deployment bag, said lower rope deployment bag having a central divider which separates the lower rope deployment bag into two pockets, said central divider having a top edge near the mouth of said lower rope deployment bag, and a bottom edge joined to the bottom of said lower rope deployment bag; (d) the lower rope deployment bag has a hole in the bottom t
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