Patent ID: 8464851
Filing Date: 2013-06-18
Classification: F16H,Y10T

Abstract:
1. A control system for an automatic transmission comprising, in combination, a first hydraulic pump having an output, a second hydraulic pump having an output, a feed limit valve in fluid communication with said output of said second hydraulic pump and having an output, a torque converter control valve in fluid communication with said output of said first hydraulic pump and having a control port and an output, a torque converter apply solenoid valve having a first output in fluid communication with said control port of said torque converter control valve and a second output adapted to engage a lockup clutch of a torque converter, a lubrication flow regulator valve having a first control port in fluid communication with said output of said first hydraulic pump and a second control port, an oil cooler operably disposed between an outlet port of said torque converter control valve and an inlet port of said lubrication flow regulator valve, a lubrication override enable valve having an outlet in fluid communication with said second control port of said lubrication flow regulator valve, a manually operated spool valve having a first output enabling reverse and a second output enabling forward gears of such transmission, a default control valve having inlet ports in fluid communication with said second output of said manually operated spool valve, a first default valve control port in fluid communication with said first output of said manually operated valve and a second default valve control port, a default solenoid valve having an output in fluid communication with said second default valve control port of said default control valve, and a plurality of solenoid valves, each of said solenoid valves having an inlet in fluid communication with said output of said second hydraulic pump and an output in fluid communication with a hydraulic clutch actuator.