Interrelated power delivery controls – including engine control – Transmission control – Control by sensed ambient condition – pattern indicia,...
Patent
1999-04-15
2000-10-31
Ta, Khoi Q.
Interrelated power delivery controls, including engine control
Transmission control
Control by sensed ambient condition, pattern indicia,...
477906, 701 62, F16H 5944
Patent
active
061394688
ABSTRACT:
An automatic transmission control system having gearing that establishes multiple forward driving ratios and a reverse ratio as well as a neutral mode, an electrohydraulic control valve circuit for controlling the application and release of clutch and brake elements for the transmission gearing, a driver-controlled range selector for transmitting operator commands to shift control logic, and a failure mode management circuit that monitors the shift control logic and the response of the transmission system to operator commands, as well as the transmission range selector signals delivered to the shift control logic whereby multiple control redundancies in the electronic range control system ensure that system failures and component failures develop an error signal to alert the driver of possible malfunctions during the range selection period. Range feedback information from the transmission and system validation for the electronic microprocessor output commands when multiple error signals are present will result in a neutral default state for the transmission.
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Goates Eldon Lamar
Marshall Charles Edward
Ford Motor Company
McKenzie Frank G.
Ta Khoi Q.
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