Cooling and lubrication system including 3-way solenoid-actuated valve for automatic transmission

A cooling and lubrication system for use in an automatic transmission, said cooling and lubrication system comprising:

• a 3-way solenoid-actuated valve comprising:
• a valve body having an inlet port and a first outlet port and a second outlet port;
• a valve disposed within said valve body and slidably controllable to proportion flow between said first outlet port and said second outlet port;
• and
• a spring disposed in said valve body to bias said valve for flow toward said second outlet port;
• at least one pump driven and proportionally controllable by an electric motor providing fluid to said inlet port;
• a first fluid circuit connected to said first outlet port providing cooling fluid to a first subsystem of the automatic transmission;
• a second fluid circuit connected to said second outlet port providing cooling fluid to a second subsystem of the automatic transmission;
• and
• a bypass orifice to bypass a fixed flow of fluid around said 3-way solenoid-actuated valve of the first subsystem of the automatic transmission.

An automatic transmission comprising:

• a first subsystem;
• a second subsystem;
• a 3-way solenoid-actuated valve comprising:
• a valve body having an inlet port and a first outlet port and a second outlet port;
• a valve disposed within said valve body and slidably controllable to proportion flow between said first outlet port and said second outlet port;
• and
• a spring disposed in said valve body to bias said valve for flow toward said second outlet port;
• at least one pump providing fluid to said inlet port;
• a bypass orifice to bypass a fixed flow of fluid around said solenoid-actuated valve to said first subsystem;
• a first fluid circuit connected to said first outlet port providing fluid to said first subsystem;
• and
• a second fluid circuit connected to said second outlet port providing fluid to said second subsystem.