Electric shift and transfer case apparatus with control system therefore
First Claim
1. A control system for a motor vehicle of the type including a passenger compartment and a transmission assembly including an automatic transmission having a mode select member having a plurality of discrete shift positions corresponding respectively to the shift modes of the transmission and operative in response to movement of the mode select member to its various shift positions to shift the transmission to the respective transmission shift modes, said control system comprising:
- A) a control module adapted to be mounted in the passenger compartment and including a plurality of shift select positions corresponding respectively to the shift modes of the automatic transmission and means operative in response to operator selection of each shift select position to generate a shift signal representative of the selected shift mode;
B) an electronic logic module receiving input signals comprising said shift signals, a vehicle speed signal, and a transmission present position signal and operative1) in response to operator selection of said shift positions to process said input signals in a manner to generate a first set of command signals including a command signal corresponding to each automatic transmission shift mode, and2) to process said input signals in a manner to generate a second set of command signals;
C) a power module, adapted to be drivingly connected to the mode select member, receiving said first set of command signals and operative in response to said first set of command signals to selectively move the mode select member between its various discrete shift positions to selectively shift the automatic transmission between its various shift modes; and
D) power means receiving said second set of command signals and operative to perform further shifting operations in the transmission assembly unrelated to the shifting movement of the mode select member by the power module.
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0 Petitions
Accused Products
Abstract
An electronic control system for a motor vehicle automatic transmission assembly of the type including an automatic transmission and a transfer case connected to the output of the automatic transmission. The automatic transmission has a mode select shaft to position the transmission in its various shift modes and includes a plurality of serially arranged planetary gear sets which are selectively engagable to provide the various shift modes of the transmission including the various forward speeds of the transmission. Solenoid valves are provided to control each planetary gear set so as to provide a direct drive or a speed reduction through that gear set. The invention control system includes a push-button module positioned in the passenger compartment of the motor vehicle providing input signals to a microprocessor. The microprocessor generates a first set of command signals for shifting the transmission between its various shift modes in response to operator selection of a particular push-button, a further set of command signals to automatically shift the transmission between its various forward speeds with the transmission in a forward drive mode, and a further set of command signals to shift the transfer case between its various drive modes in response to operator selection of a push-button corresponding to a transfer case shift mode.
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Citations
15 Claims
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1. A control system for a motor vehicle of the type including a passenger compartment and a transmission assembly including an automatic transmission having a mode select member having a plurality of discrete shift positions corresponding respectively to the shift modes of the transmission and operative in response to movement of the mode select member to its various shift positions to shift the transmission to the respective transmission shift modes, said control system comprising:
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A) a control module adapted to be mounted in the passenger compartment and including a plurality of shift select positions corresponding respectively to the shift modes of the automatic transmission and means operative in response to operator selection of each shift select position to generate a shift signal representative of the selected shift mode; B) an electronic logic module receiving input signals comprising said shift signals, a vehicle speed signal, and a transmission present position signal and operative 1) in response to operator selection of said shift positions to process said input signals in a manner to generate a first set of command signals including a command signal corresponding to each automatic transmission shift mode, and 2) to process said input signals in a manner to generate a second set of command signals; C) a power module, adapted to be drivingly connected to the mode select member, receiving said first set of command signals and operative in response to said first set of command signals to selectively move the mode select member between its various discrete shift positions to selectively shift the automatic transmission between its various shift modes; and D) power means receiving said second set of command signals and operative to perform further shifting operations in the transmission assembly unrelated to the shifting movement of the mode select member by the power module. - View Dependent Claims (2, 3)
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4. A transmission control system for a motor vehicle of the type including a passenger compartment and an automatic transmission having a plurality of shift positions including a plurality of forward drive positions and means for automatically shifting the automatic transmission between the forward drive positions in response to sensed vehicle speed and throttle position signals, said control system comprising:
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A) a control module adapted to be mounted in the passenger compartment and including a plurality of shift select positions corresponding respectively to the transmission shift positions and means operative in response to operator selection of each shift select position to generate a shift signal representative of the selected shift position; and B) control means, including an electronic logic module receiving said shift signals and vehicle speed, throttle position, and present transmission shift position signals, 1) operative in response to operator selection of a particular shift select position to move the mode select member to shift the transmission to the selected shift position, and 2) operative with the transmission in a drive position to selectively shift the transmission between its forward drive positions in accordance with the received vehicle speed and throttle position signals. - View Dependent Claims (5, 6, 7, 8, 9, 10)
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11. A control system for a motor vehicle of the type including a passenger compartment and an automatic transmission having a plurality of shift positions and a transfer case drivingly connected to the transmission output and having two and four wheel shift positions, said control system comprising:
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A) a control module adapted to be mounted in the passenger compartment and including 1) a plurality of shift select positions corresponding respectively to the transmission shift positions and the transfer case shift positions, and 2) means operative in response to operator selection of each shift select position to generate a shift signal representative to the selected shift position; and B) control means, including an electronic logic module receiving vehicle speed signals and said shift signals, operative in response to operator selection of a particular shift select position to shift the transmission or transfer case to the selected shift position. - View Dependent Claims (12, 13, 14, 15)
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Specification