Automated manual transmission shift sequence controller

Patent · Tue Feb 01 04:00:00 EST 2000

OSTI ID:872833

Lawrie, Robert E ^[1]; Reed, Richard G ^[2]; Rausen, David J ^[3]

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1. Whitmore Lake, MI
2. Royal Oak, MI
3. Denver, CO

A powertrain system for a hybrid vehicle. The hybrid vehicle includes a heat engine, such as a diesel engine, and an electric machine, which operates as both, an electric motor and an alternator, to power the vehicle. The hybrid vehicle also includes a manual-style transmission configured to operate as an automatic transmission from the perspective of the driver. The engine and the electric machine drive an input shaft which in turn drives an output shaft of the transmission. In addition to driving the transmission, the electric machine regulates the speed of the input shaft in order to synchronize the input shaft during either an upshift or downshift of the transmission by either decreasing or increasing the speed of the input shaft. When decreasing the speed of the input shaft, the electric motor functions as an alternator to produce electrical energy which may be stored by a storage device. Operation of the transmission is controlled by a transmission controller which receives input signals and generates output signals to control shift and clutch motors to effect smooth launch, upshift shifts, and downshifts of the transmission, so that the transmission functions substantially as an automatic transmission from the perspective of the driver, while internally substantially functioning as a manual transmission.

• Assignee: DaimlerChysler Corporation (Auburn Hills, MI)
• Patent Number(s): US 6019698
• Application Number: 08/980,683
• OSTI ID: 872833
• Country of Publication: United States
• Language: English

Related Subjects

/477/74/
addition
alternator
automated
automated manual
automatic
automatic transmission
clutch
clutch motors
configured
control
control shift
controlled
controller
decreasing
device
diesel
diesel engine
downshift
downshifts
drive
driver
drives
driving
effect
effect smooth
electric
electric machine
electric motor
electrical
electrical energy
energy
engine
functioning
functions
functions substantially
generates
generates output
heat
heat engine
hybrid
hybrid vehicle
increasing
input
input shaft
input signal
input signals
internally
internally substantially
launch
machine
machine drive
machine regulates
manual
manual transmission
manual-style
manual-style transmission
motor
motor functions
motors
operate
operates
operation
output
output shaft
output signal
output signals
perspective
power
powertrain
produce
produce electrical
receives
receives input
regulates
sequence
sequence control
shaft
shift
shifts
signals
smooth
smooth launch
speed
storage
storage device
stored
substantially
substantially functioning
synchronize
transmission
transmission configured
transmission controller
transmission functions
upshift
upshift shifts
vehicle