Automatic transmission control system for automobiles

Claim 2

An automatic transmission control system for automobiles, which comprises: a plurality of speed change signal generator circuits for developing various combinations of speed change signals representing different transmission ratios, a logical circuit connected to said speed change signal generator circuits for developing specific transmission ratio signals from said combinations, a memory connected to said logical circuit for remembering said transmission ratio signals from at least one to the next, and an electromagnetic valve drive circuit including an AND circuit connected to said logical circuit for deriving valve drive signals in accordance with said transmission ratio signals.

Claim 3

An automatic transmission control system for automatic transmissions having electromagnetic valves with solenoids and useable in vehicles having wheels and an accelerator pedal, which comprises: a tachometer generator for generating an output at frequencies proportional to the r.p.m. of the vehicle wheels, an a.c.-to-d.c. converter to convert the output from said wheel r.p.m. detector into a corresponding d.c. voltage, a throttle switch co-operating with the accelerator pedal and having a multi-contact construction, a throttle circuit connected to said throttle switch and having an output terminal to provide output of various valves corresponding to respective states of said throttle switch, a plurality of gear signal generators having predetermined shifting characteristics and comparing the output signal from said a.c.-to-d.c. converter and the output signal from said throttle circuit for developing change signals, a logical circuit connected to said gear signal generators for logically operating on said gear change signals to change them to a different form, a memory connected to said logical circuit for remembering the changed gear change signals from at least one to the next, and an electromagnetic valve drive circuit including and AND circuit connected to said memory to feed said solenoids of said electromagnetic valves.

Claim 4

An automatic transmission control system for automatic transmissions having electromagnetic valves with solenoids and useable in vehicles having wheels and an accelerator pedal, which comprises: a tachometer generator for generating an output at frequencies proportional to the r.p.m. of the vehicle wheels, an a.c.-to-d.c. converter to convert the output from said wheel r.p.m. detector into a corresponding d.c. voltage, a throttle switch co-operating with the accelerator pedal and having a multi-contact construction, a throttle circuit connected to said throttle switch and having an output terminal to provide output of various valves corresponding to respective states of said throttle switch, a plurality of gear signal generators having predetermined shifting characteristics and comparing the output signal from said a.c.-to-d.c. converter and the output signal from said throttle circuit for developing change signals, a logical circuit connected to said gear signal generators for logically operating on said gear change signals to change them to a different form, a memory connected to said logical circuit for remembering the changed gear change signals from at least one to the next, and an electromagnetic valve drive circuit including and AND circuit connected to said memory to feed said solenoids of said electromagnetic valves.

Claim 5

The automatic transmission control system for automobiles according to claim 2, wherein said transmission has both automatic and manual gear shifts, said system including a selector switch connected to said electromagnetic valve drive circuit and to said solenoids of said electromagnetic valves to select between the automatic and manual gear shifts of the transmission.

Claim 6

The automatic transmission control system for vehicles according to claim 2, wherein said throttle switch includes a movable contact and a plurality of fixed contacts.

Claim 7

The automatic transmission control for vehicles according to claim 2, wherein said throttle circuit includes a resistor connected between the power supply and an output terminal, two variable resistors respectively connected between respective input terminals at one end said output terminal at the other end, and a variable resistor connected between said output terminal and the ground.

Claim 8

The automatic transmission control system for vehicles according to claim 2, wherein said memory includes two bistable multi-vibrators having respective capacitors to determine the initial state of said two bistable multi-vibrators, and two transistors to maintain the state of said two bistable multi-vibrators previous to an impression thereon of an external signal from said logical circuit to change signals at the input terminals of said two bistable multi-vibrators.

Claim 9

The automatic transmission control system for vehicles according to claim 6, wherein one of said two transistors (the first transistor) has the base connected to the collector of the other transistor (the second transistor), the collector of said first transistor being connected to the said input terminals of said memory through the respective diodes, the emitter of said first transistor being grounded, the collector of said second transistor being connected through a resistor to a power supply, the base of said second transistor being connected through a resistor to a control input terminal of said memory, and the emitter of said second transistor being grounded.

Claim 10

The automatic transmission control system for vehicles according to claim 6, wherein said input terminals of said memory connected through said respective diodes to said first transistors are four in number (the first to fourth terminals), said bistable multi-vibrators have respective two transistors (the first to fourth multi-vibrator transistors), the first multi-vibrator transistor is connected to a pair of diodes having respective positive poles respectively in connection to the first and fourth terminals, the second multi-vibrator transistor is connected to a pair of diodes having respective positive poles respectively connected to the second and third terminals, the third multi-vibrator transistor is connected to a pair of diodes having respective positive poles respectively in connection to the first and second terminals, the fourth multi-vibrator transistor is connected to a pair of diodes having respective positive poles respectively connected to the third and fourth terminals, and the collectors of the first to fourth multi-vibrator transistors are connected to respective output terminals of said memory.

Claim 11

The automatic transmission control system for vehicles according to claim 2, wherein said electromagnetic valve drive circuit includes four input terminals to receive respective output signals from said memory circuit, four output terminals to supply power to respective solenoids of the electromagnetic valves, four transistors in said AND circuit and four transistors in said power supply circuit to feed said solenoids of the electromagnetic valves, the transistors in said AND circuit being connected through respective resistors to the respective transistors in said power supply circuit, and the bases of the transistors in said AND cirCuit being connected through respective pairs of diodes to respectively different pairs of two input terminals selected from said input terminals.

Claim 12

The automatic transmission control system for vehicles according to claim 2, wherein said electromagnetic valve drive circuit includes four input terminals to receive respective output signals from said memory circuit, four output terminals to supply power to respective solenoids of the electromagnetic valves, four transistors in said AND circuit and four transistors in said power supply circuit to feed said solenoids of the electromagnetic valves, the transistors in said AND circuit being connected through respective resistors to the respective transistors in said power supply circuit, and the bases of the transistors in said AND circuit being connected to the positive pole of respective pairs of diodes having respective negative poles respectively connected to said input terminals such that said pairs of the diodes correspond to respectively different combinations in pair of said input terminals.

Claim 13

An automatic transmission control system of the type having a signal holding circuit and for use with vehicles having respective accelerator pedals, which comprises: a throttle switch for operative connection with a said accelerator pedal and having a multi-contact constructions, and a throttle circuit connected to said throttle switch and including a circuit to produce output of different values at an output terminal thereof upon actuation of said multi-contact throttle switch and timer circuits associated to respective fixed contacts of said multi-contact throttle switch for maintaining for a constant period of time the signal present at said output terminal immediately before releasing the accelerator pedal, whereby the output signal from said throttle switch produced upon releasing the accelerator pedal cuts the signal impressed on input terminals of said signal holding circuit to maintain the signal immediately before the cut-off signal.

Claim 14

An automatic transmission control system of the type having a signal holding circuit and for use with vehicles having respective accelerator pedals, which comprises: a throttle switch for operative connection with a said accelerator pedal and having a multi-contact constructions, and a throttle circuit connected to said throttle switch and including a circuit to produce output of different values at an output terminal thereof upon actuation of said multi-contact throttle switch and timer circuits associated to respective fixed contacts of said multi-contact throttle switch for maintaining for a constant period of time the signal present at said output terminal immediately before releasing the accelerator pedal, whereby the output signal from said throttle switch produced upon releasing the accelerator pedal cuts the signal impressed on input terminals of said signal holding circuit to maintain the signal immediately before the cut-off signal.

Claim 15

The automatic transmission control system for vehicles according to claim 11, wherein said throttle circuit includes; a resistive voltage divider having a series connection of a first fixed resistor and a first variable resistor, the other end of said first fixed resistor being connected to a first input terminal which is applied with a first signal of a constant predetermined voltage, the connection between both said resistors (voltage dividing point) being connected to said output terminal of said throttle circuit, and the other end of said first variable resistor being grounded; a second signal voltage receiving circuit having a series connection of a first diode and a second variable resistor connected to each other through a first lead, the other end of said first diode being connected to a second input terminal which is applied with a second signal of said predetermined voltage, and the other end of said second variable resistor being connected to said voltage dividing point; a third signal voltage receiving circuit having a series connection of a second diode and a third variable resistor connected to each other through a second lead, the other end of said second diode being connected to a third input terminal which is applied with a third signal of said predetermined voltage, and the other end of said third variable resistor being connected to said voltage dividing point; a first timer circuit having a series circuit of a second fixed resistor connected to said second input terminal and a first grounded capacitor, a first transistor having the emitter connected to the ground and the base connected through a fourth variable resistor to the connection between said second fixed resistor and said first capacitor, and a second transistor having the emitter connected to said first input terminal, the base connected through a third fixed resistor to the collector of said first transistor and the collector connected to said first lead; and a second timer circuit having a series circuit of a fourth fixed resistor connected to said third input terminal and a second grounded capacitor, a third transistor having the emitter connected to the ground and the base connected through a fifth variable resistor to the connection between said fourth fixed resistor and said second capacitor, and a fourth transistor having the emitter connected to said first input terminal, the base connected through a fifth fixed resistor to the collector of said third transistor and the collector connected to said second lead.

Claim 16

A control system for an automatic transmission having a plurality of gear shifting mechanisms and being usable in a vehicle having a movable accelerator, comprising: vehicle speed detector means for producing a digital signal having pulses whose number per unit time is proportional to the speed of said vehicle, converter means operatively connected to said speed detector means for converting said digital signal to an analog signal having a magnitude proportional to the number of pulses per unit time of said digital signal, a throttle switch for cooperating with said accelerator and having a plurality of signal outputs differing in accordance with the amount of movement of said accelerator and having no output when said accelerator is released, throttle circuit means connected to said throttle switch for producing a voltage signal whose value varies depending on the output of said throttle switch, a plurality of gear-shift signal generator circuit means, each connected to said converter means and said throttle circuit means, for producing different speed change signals in accordance with respective predetermined transmission characteristics depending on the magnitude of said analog signal of said converter means relative to the value of said voltage signal of said throttle circuit means, logic circuit means connected to said plurality of gear-shift signal generator means for producing one of different gear-shift signals which is logically determined from said different speed change signals; memory means connected to said logic circuit means and said throttle switch for memorizing an output which changes in accordance with the change of the gear-shift signal derived from said logic circuit means when said at least one of said throttle switch output is effected by said accelerator movement, and which is retained irrespective of a change in said gear-shift signal during the time no throttle switch output is effected because said accelerator is released, and means including an electromagnetic valve unit for controlling the operation of said gear shifting mechanism in accordance with the output memorized in said memory.

Claim 17

A control system for an automatic transmission having a plurality of gear shifting mechanisms and being usable in a vehicle having a movable accelerator, comprising: vehicle speed detector means for producing a digital signal having pulses whose number per unit time is proportional to the speed of said vehicle, converter means operatively connected to said speed detector means for converting said digital signal to an analog signal having a magnitude proportional to the number of pulses per unit time of said digital signal, a throttle switch for cooperating with said accelerator and having a plurality of signal outputs differing in accordance with the amount of movement of said accelerator and having no output when said accelerator is released, throttle circuit means connected to said throttle switch for producing a voltage signal whose value varies depending on the output of said throttle switch, a plurality of gear-shift signal generator circuit means, each connected to said converter means and said throttle circuit means, for producing different speed change signals in accordance with respective predetermined transmission characteristics depending on the magnitude of said analog signal of said converter means relative to the value of said voltage signal of said throttle circuit means, logic circuit means connected to said plurality of gear-shift signal generator means for producing one of different gear-shift signals which is logically determined from said different speed change signals; memory means connected to said logic circuit means and said throttle switch for memorizing an output which changes in accordance with the change of the gear-shift signal derived from said logic circuit means when said at least one of said throttle switch output is effected by said accelerator movement, and which is retained irrespective of a change in said gear-shift signal during the time no throttle switch output is effected because said accelerator is released, and means including an electromagnetic valve unit for controlling the operation of said gear shifting mechanism in accordance with the output memorized in said memory.

Claim 18

A control system according to claim 13 wherein said memory means comprises an input circuit connected to said logic circuit means for receiving said different gear-shift signals, bistable multivibrator means connected to said input circuit for producing said output corresponding to said gear-shift signals, and a circuit connected to said input circuit for bypassing said different gear-shift signals during the presence of said no output derived from said throttle switch thereby preventing said signals from being applied to said bistable multivibrator means.

Claim 19

An automatic transmission control system for use in an automatic transmission on vehicles having an engine, an engine throttle, and a plurality of gear ratio drives which comprises: first means for generating an a-c voltage at a frequency proportional to the speed of the vehicle, a first circuit connected to said means for generating a variable d-c voltage proportional to said frequency, a second circuit connected to the engine throttle for generating a variable d-c voltage corresponding to the opening of said throttle, a third circuit having two inputs each connected to said first circuit and said second circuit and generating a signal when the aforesaid two variable d-c voltages attain a Predetermined relationship, a fourth circuit connected to said third circuit for generating an output signal corresponding to a signal generated by said third circuit and holding said output signal until another signal which is different from the signal formerly generated by said third circuit appears, said fourth circuit including a fifth circuit having a terminal for holding the output signal of said fourth circuit constant regardless of the input signal from said third circuit when a signal is applied to said terminal, said terminal being connected to said second circuit thereby to hold the output signal from said fourth signal when the d-c voltage of said second circuit does not reach a predetermined value, and third means having an input connected to said fourth circuit and including a gear shifting mechanism for accomplishing a selective gear ratio drive in response to the signal of said fourth circuit.

Claim 20

An automatic transmission control system for use in an automatic transmission on vehicles having an engine, an engine throttle, and a plurality of gear ratio drives which comprises: first means for generating an a-c voltage at a frequency proportional to the speed of the vehicle, a first circuit connected to said means for generating a variable d-c voltage proportional to said frequency, a second circuit connected to the engine throttle for generating a variable d-c voltage corresponding to the opening of said throttle, a third circuit having two inputs each connected to said first circuit and said second circuit and generating a signal when the aforesaid two variable d-c voltages attain a Predetermined relationship, a fourth circuit connected to said third circuit for generating an output signal corresponding to a signal generated by said third circuit and holding said output signal until another signal which is different from the signal formerly generated by said third circuit appears, said fourth circuit including a fifth circuit having a terminal for holding the output signal of said fourth circuit constant regardless of the input signal from said third circuit when a signal is applied to said terminal, said terminal being connected to said second circuit thereby to hold the output signal from said fourth signal when the d-c voltage of said second circuit does not reach a predetermined value, and third means having an input connected to said fourth circuit and including a gear shifting mechanism for accomplishing a selective gear ratio drive in response to the signal of said fourth circuit.

Claim 21

A control system for an automatic transmission having a plurality of gear shifting mechanisms and being usable in a vehicle having an engine, comprising: vehicle speed detector means for producing an output signal proportional to the speed of said vehicle, means for producing a signal corresponding to the load on said engine, gear-shift signal generator circuit means connected to said detector means and to said load signal producing means for producing different speed change signals in accordance with predetermined transmission characteristics depending on the values of said output signal and load signal, memory means connected to said gear-shift signal generator means for memorizing an output which changes in accordance with said speed change signals, and means connected to said memory means for controlling the operation of said gear shifting mechanisms in accordance with the said memorized output of said memory means.

Claim 22

A control system for an automatic transmission having a plurality of gear shifting mechanisms and being usable in a vehicle having an engine, comprising: vehicle speed detector means for producing an output signal proportional to the speed of said vehicle, means for producing a signal corresponding to the load on said engine, gear-shift signal generator circuit means connected to said detector means and to said load signal producing means for producing different speed change signals in accordance with predetermined transmission characteristics depending on the values of said output signal and load signal, memory means connected to said gear-shift signal generator means for memorizing an output which changes in accordance with said speed change signals, and means connected to said memory means for controlling the operation of said gear shifting mechanisms in accordance with the said memorized output of said memory means.

Claim 23

A control system for an automatic transmission having a plurality of gear shifting mechanisms and being usable in a vehicle having an engine comprising: vehicle speed detector means for producing an output signal proportional to the speed of said vehicle, means producing a signal corresponding to the load on said engine, gear-shift signal generator circuit means connected to said load signal producing means and to said detector means for producing different speed change signals in accordance with predetermined transmission characteristics depending on the relative values of said output signal and said load signal, memory means connected to said gear-shift signal generator means and said load signal producing means for memorizing an output which changes in accordance with said speed change signals while said load signal producing means produces a load indicating signal, but which output is maintained when a no load signal occurs from load signal producing means even if there is a change in said speed change signals, and means connected to said memory means for controlling the operation of said gear shifting mechanisms in accordance with the said memorized output of said memory means.

Claim 24

A control system for an automatic transmission having a plurality of gear shifting mechanisms and being usable in a vehicle having an engine comprising: vehicle speed detector means for producing an output signal proportional to the speed of said vehicle, means producing a signal corresponding to the load on said engine, gear-shift signal generator circuit means connected to said load signal producing means and to said detector means for producing different speed change signals in accordance with predetermined transmission characteristics depending on the relative values of said output signal and said load signal, memory means connected to said gear-shift signal generator means and said load signal producing means for memorizing an output which changes in accordance with said speed change signals while said load signal producing means produces a load indicating signal, but which output is maintained when a no load signal occurs from load signal producing means even if there is a change in said speed change signals, and means connected to said memory means for controlling the operation of said gear shifting mechanisms in accordance with the said memorized output of said memory means.

Claim 25

An automatic transmission control system for a vehicle having wheels connected through an automatic transmission having gears to an engine with an accelerator pedal and an electromagnetic valve unit with a plurality of electromagnetic valves having respective solenoids, comprising: a wheel r.p.m. detector for generating an output at frequencies proportional to the vehicle wheel speed; an ac to dc voltage converter connected to said detector for converting the output thereof into a corresponding dc voltage, a throttle switch adapted to cooperate with the accelerator pedal and having a plurality of contacts successively made upon further depression of the accelerator pedal, a throttle circuit connected to said throttle switch and having an output terminal to provide outputs of various values corresponding to respective contacts of the throttle switch, a plurality of gear shiFt signal generators connected to said converter and throttle circuit and having predetermined shifting characteristics and comparing the output signal from said ac to dc converter with the output signal from said throttle circuit to produce differing combinations of gear shifting signals representing different desired transmission gearing ratios, a logic circuit connected to said gear shift signal generators for producing different output signals according to said differing combinations of gear shifting signals from said gear shift signal generators, a memory circuit connected to said logic circuit for holding the logic circuit output signals that immediately exist before the dissappearance thereof from said logic circuit, and an electromagnetic valve drive circuit connected to and controlled by said memory circuit to feed said solenoids of said electromagnetic valves to change a gearing ratio.

Claim 26

An automatic transmission control system for a vehicle having wheels connected through an automatic transmission having gears to an engine with an accelerator pedal and an electromagnetic valve unit with a plurality of electromagnetic valves having respective solenoids, comprising: a wheel r.p.m. detector for generating an output at frequencies proportional to the vehicle wheel speed; an ac to dc voltage converter connected to said detector for converting the output thereof into a corresponding dc voltage, a throttle switch adapted to cooperate with the accelerator pedal and having a plurality of contacts successively made upon further depression of the accelerator pedal, a throttle circuit connected to said throttle switch and having an output terminal to provide outputs of various values corresponding to respective contacts of the throttle switch, a plurality of gear shiFt signal generators connected to said converter and throttle circuit and having predetermined shifting characteristics and comparing the output signal from said ac to dc converter with the output signal from said throttle circuit to produce differing combinations of gear shifting signals representing different desired transmission gearing ratios, a logic circuit connected to said gear shift signal generators for producing different output signals according to said differing combinations of gear shifting signals from said gear shift signal generators, a memory circuit connected to said logic circuit for holding the logic circuit output signals that immediately exist before the dissappearance thereof from said logic circuit, and an electromagnetic valve drive circuit connected to and controlled by said memory circuit to feed said solenoids of said electromagnetic valves to change a gearing ratio.

Claim 27

An automatic transmission control system for vehicles having engines and using automatic transmission having gear-shifting mechanisms, comprising: vehicle speed detector means for operative connection to said vehicle to produce an output signal at frequencies proportional to the vehicle speed, AC-DC converter means connected to said detector means to convert the output signal of said vehicle speed detector into a corresponding analog signal, engine load detector means for operative connection to the engine of said vehicle to produce an output signal corresponding to the engine throttle valve opening or engine intake negative pressure, gear-shift signal generator circuit means connected to said AC-DC converter and load detector means to generate a gear-shift signal by detecting certain relationships between the output signals of said AC-DC converter means and said engine load detector means, memory means connected to and producing an output signal in accordance with the output signal of said gear-shift signal generator circuit means, means connected between said load detector and memory means for causing the output signal of said memory means to be locked upon appearance from said engine load detector means of a signal indicating the ''''cut-off'''' of the state of the engine throttle valve, and means connected to said memory means for operative connection to the automatic transmission of said vehicle to execute the shifting of the transmission gear-shifting mechanism thereof in accordance with the output signal of said memory means.

Claim 28

An automatic transmission control system for vehicles having engines and using automatic transmission having gear-shifting mechanisms, comprising: vehicle speed detector means for operative connection to said vehicle to produce an output signal at frequencies proportional to the vehicle speed, AC-DC converter means connected to said detector means to convert the output signal of said vehicle speed detector into a corresponding analog signal, engine load detector means for operative connection to the engine of said vehicle to produce an output signal corresponding to the engine throttle valve opening or engine intake negative pressure, gear-shift signal generator circuit means connected to said AC-DC converter and load detector means to generate a gear-shift signal by detecting certain relationships between the output signals of said AC-DC converter means and said engine load detector means, memory means connected to and producing an output signal in accordance with the output signal of said gear-shift signal generator circuit means, means connected between said load detector and memory means for causing the output signal of said memory means to be locked upon appearance from said engine load detector means of a signal indicating the ''''cut-off'''' of the state of the engine throttle valve, and means connected to said memory means for operative connection to the automatic transmission of said vehicle to execute the shifting of the transmission gear-shifting mechanism thereof in accordance with the output signal of said memory means.

Claim 29

An automatic transmission control system for vehicles having engines with throttle valves and using automatic transmissions having gear-shifting mechanisms comprising: means including a vehicle speed detector for operative connection to a said vehicle for producing an output signal proportional to the vehicle speed, engine load detector means for operative connection to the engine of said vehicle to produce an output signal corresponding to the engine load, gear-shift signal generator means connected to said vehicle speed detector means and load detector means for generating output signals upon detecting certain gear-shift relationships between the aforesaid output signals thereof, memory means connected to said gear-shift signal generator means for producing an output signal in accordance with the output signal thereof, means connected between said load detector and memory means for causing the output signal of said memory means to be locked upon appearance from said engine load detector means of a signal indicating the ''''cut-off'''' state of the engine throttle valve, and means connected to said memory means for operative connection to the automatic transmission of said vehicle to execute the shifting of the transmission gear-shifting mechanism thereof in accordance with the output signal of said memory means.

Claim 30

An automatic transmission control system for vehicles having engines with throttle valves and using automatic transmissions having gear-shifting mechanisms comprising: means including a vehicle speed detector for operative connection to a said vehicle for producing an output signal proportional to the vehicle speed, engine load detector means for operative connection to the engine of said vehicle to produce an output signal corresponding to the engine load, gear-shift signal generator means connected to said vehicle speed detector means and load detector means for generating output signals upon detecting certain gear-shift relationships between the aforesaid output signals thereof, memory means connected to said gear-shift signal generator means for producing an output signal in accordance with the output signal thereof, means connected between said load detector and memory means for causing the output signal of said memory means to be locked upon appearance from said engine load detector means of a signal indicating the ''''cut-off'''' state of the engine throttle valve, and means connected to said memory means for operative connection to the automatic transmission of said vehicle to execute the shifting of the transmission gear-shifting mechanism thereof in accordance with the output signal of said memory means.

Claim 31

An automatic transmission control system for vehicle having engines and using automatic transmissions having gear-shifting mechanisms, comprising: vehicle speed detector means for operative connection to said vehicle for producing an output signal proportional to the vehicle speed, gear-shift signal generator circuit means connected to said detector means for producing different speed change signals in accordance with predetermined characteristics depending on the values of at least said output signal from said detector means, memory means connected to and producing an output signal in accordance with the output signal of said gear-shift signal generator circuit means, and mean connected to said memory means for operative connected to the automatic transmission of said vehicle to execute the shifting of the transmission gear-shifting mechanism thereof in accordance with the output signal of said memory means.

Claim 32

An automatic transmission control system for vehicle having engines and using automatic transmissions having gear-shifting mechanisms, comprising: vehicle speed detector means for operative connection to said vehicle for producing an output signal proportional to the vehicle speed, gear-shift signal generator circuit means connected to said detector means for producing different speed change signals in accordance with predetermined characteristics depending on the values of at least said output signal from said detector means, memory means connected to and producing an output signal in accordance with the output signal of said gear-shift signal generator circuit means, and mean connected to said memory means for operative connected to the automatic transmission of said vehicle to execute the shifting of the transmission gear-shifting mechanism thereof in accordance with the output signal of said memory means.

Claim 33

A control system as in claim 21, including means connected to said memory means for causing the output signal of said memory means to be locked upon the occurrence of certain conditions.