Oil cooler bypass valve
First Claim
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1. A fluid bypass valve configured to be placed within a bypass passage defined by a component, the bypass valve comprising:
- a valve housing defining an elongated bypass passage having a first valve seat, said bypass passage communicating with a fluid supply and a fluid return;
a thermally responsive actuator which moves the valve bearing element between an open and closed positions;
a sliding valve element disposed within the valve housing;
first and second intermediate helical springs annularly disposed about the sliding valve element;
a valve seal which is engageable with the first valve seat having a closed position for preventing oil flow through the elongated bypass passage, and further having an open position for allowing bypass oil fluid from the fluid supply line back to the fluid return line; and
wherein the first spring engaged between said sliding valve element and said valve housing and operative to urge said sliding valve element away said first valve seat and wherein the second spring is engaged between said sliding valve element and said valve seal and operative to urge said valve seal toward said valve seat.
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Abstract
A valve actuating mechanism for a transmission/engine fluid cooler bypass valve of the type in which a responsive element expands to urge a valve member against a valve seat and thereby causes transmission fluid to flow through an oil fluid cooler. A cast valve housing is utilized which is interposed between the cooler and the oil source. The valve actuating mechanism is designed to allow fluid to pass through the valve once the fluid has reached an elevated pressure level.
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Citations
19 Claims
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1. A fluid bypass valve configured to be placed within a bypass passage defined by a component, the bypass valve comprising:
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a valve housing defining an elongated bypass passage having a first valve seat, said bypass passage communicating with a fluid supply and a fluid return;
a thermally responsive actuator which moves the valve bearing element between an open and closed positions;
a sliding valve element disposed within the valve housing;
first and second intermediate helical springs annularly disposed about the sliding valve element;
a valve seal which is engageable with the first valve seat having a closed position for preventing oil flow through the elongated bypass passage, and further having an open position for allowing bypass oil fluid from the fluid supply line back to the fluid return line; and
wherein the first spring engaged between said sliding valve element and said valve housing and operative to urge said sliding valve element away said first valve seat and wherein the second spring is engaged between said sliding valve element and said valve seal and operative to urge said valve seal toward said valve seat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A fluid bypass valve configured to be placed within a bypass passage defined by a component, the bypass valve comprising:
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a valve housing defining an elongated bypass passage having a first valve seat, said bypass passage communicating with a fluid supply and a fluid return;
a thermally responsive actuator which moves the valve bearing element between an open and closed positions;
a sliding valve element disposed within the valve housing, said sliding valve element defined a valve seal stop and a first outer bearing surface which is configured to engage a first end of the first intermediate spring, said sliding valve element has a second exterior bearing surface which is configured to engage a first end of the second intermediate spring;
first and second intermediate helical springs annularly disposed about the sliding valve element;
a valve seal which is engageable with the first valve seat having a closed position for preventing oil flow through the elongated bypass passage, and further having an open position for allowing bypass oil fluid from the fluid supply line back to the fluid return line; and
wherein the first spring is operably engaged between said sliding valve element and said valve housing and operative to urge said sliding valve element away said first valve seat and wherein the second spring is engaged between said sliding valve element and said valve seal and operative to urge said valve seal toward said valve seat. - View Dependent Claims (15, 16)
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17. A fluid bypass valve configured to be placed within a bypass passage defined by a component, the bypass valve comprising:
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a valve housing defining an elongated bypass passage having a first valve seat, said bypass passage communicating with a fluid supply and a fluid return;
a thermally responsive actuator which moves the valve bearing element between an open and closed positions;
a sliding valve element disposed within the valve housing, said sliding valve element defined a valve seal stop and a first outer bearing surface which is configured to engage a first end of a first intermediate spring, said sliding valve element has a second exterior bearing surface which is configured to engage a first end of a second intermediate spring, said first and second intermediate helical springs being annularly disposed about the sliding valve element;
said sliding valve element defining a cylindrical valve element bearing surface which slidably supports a valve seal, the valve seal being engageable with the first valve seat having a closed position for preventing oil flow through the elongated bypass passage, and further having an open position for allowing bypass oil fluid from the fluid supply line back to the fluid return line; and
wherein the first spring is engaged between said sliding valve element and said valve housing and is operative to urge said sliding valve element away said first valve seat and wherein the second spring is engaged between said sliding valve element and said valve seal and operative to urge said valve seal toward said valve seat. - View Dependent Claims (18, 19)
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Specification