Patent ID: 6435143
Filing Date: 2002-08-20
Classification: F01P

Abstract:
A solenoid assembly for controlling flow of hydraulic fluid from an engine to an electronic engine temperature control valve, the solenoid assembly comprising:a housing adapted to be mounted to an engine, the housing including first and second fluid channels formed in the housing and spaced axially apart from one another, the first fluid channel adapted to communicate with a high pressure hydraulic fluid source in the engine, the second fluid channel adapted to communicate with a hydraulic fluid return in the engine which is in fluid communication with a hydraulic fluid reservoir; the first and second fluid channels communicating with an internal cavity within the housing; a fluid outlet port formed in the housing and adapted to be connected to an external fluid line; and a three-way solenoid valve, engaged with the housing, the solenoid valve having a port housing located within the cavity, the port housing having an outer wall located within the cavity and an interior, the port housing including a first port formed in the port housing and extending into the port housing from the outer wall, the first port being located at a position on the port housing so as to be in fluid communication with the first fluid channel, a second port formed in the port housing and extending into the port housing from the outer wall, the second port being located at a position on the port housing so as to be in fluid communication with the second fluid channel, and a third port formed in the port housing and extending into the port housing from the outer wall, the second port being located at a position on the port housing so as to be in fluid communication with the fluid outlet port, the third port being in fluid communication with the first and second ports through the interior of the port housing, the solenoid valve adapted to receive electrical signals for controlling flow through the ports.