Nippondenso Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Toyota Jidosha Kogyo Kabushiki Kaisha

Kiyoshi Hara

Yozo Inoue

Yoji Ito

Munetaka Noda

Teiichi Nabeta

Yasuhiro Iwata

Kiyoshi Usami

Yasufumi Kojima

Yutaka Ninoyu

Kunio Miura

Kazuo Muramoto

In an automatic transmission control device, an electric selector includes a circular common switch, a P range switch, a R range switch, a N range switch and a D range switch. A range shifting is instructed by the electric selector. When the common switch and one of the range switches are both operated in a predetermined manner, an instruction signal is delivered from the electric selector to a microcomputer. The microcomputer discriminates whether the instruction is proper or not. When the instruction is not proper, the microcomputer does not generate range shifting signals to a transmission actuator and generates a long buzzer drive signal. A driver of a vehicle is notified about this fact by a long sound of a buzzer.

Transmission control device for vehicle

A vehicle navigator is disclosed, in which in response to a storage command signal generated by the turning on of a storage switch, the present position data of a vehicle corresponding to the present cursor position is stored in a memory. In response to a set command signal subsequently generated by the turning on of a set switch, the running track data between the latest position stored and the present cursor position is stored in the memory, so that the running track is additionally displayed on a road map display device.

Navigator for vehicles

A running control system for vehicles includes a control unit, a plurality of control switches for selecting various operations, a throttle actuator, and an automatic transmission having a lock-up clutch solenoid. An automatic cruise control operation and transmission control operation is performed by the output control signals from the control unit through the throttle actuator, the lock-up clutch, and the solenoids in accordance with the set conditions of the control switches and detected signals from a vehicle speed sensor and a throttle valve sensor. With this construction, when the vehicle speed is above a predetermined value and automatic cruising is instructed, the lock-up clutch is compulsorily operated and this locked up condition of the clutch is maintained during the automatic cruising condition, thus enabling improved fuel comsumption as well as power transmission efficiency.

Automatic running control method for a vehicle

The idle speed of an internal combustion engine is automatically adjusted in cooperation with the variable adjustment of the operating condition of a refrigerant compressor of an automobile air conditioner.

Idle speed control apparatus

An air-conditioner control system for an automobile includes a shifting unit for shifting the direction of flow of conditioned air supplied to the vehicle compartment between a first flow direction including the direction of an object occupant and a second flow direction excluding the direction of the object occupant. A control unit determines the shift position of the shifting unit and selects the flow direction between the first and second flow directions in response to the difference between the vehicle compartment temperature and a desired temperature and an information indicative of an ambient temperature value or an information indicative of the value of solar radiation incident to the vehicle compartment.

Air-conditioner control system for automobiles

The temperature of the interior of a motor vehicle is controlled by an air conditioner in relation to a temperature setting which is variable in response to an action of a vehicle occupant. A voice synthesizer (17) is supplied with vocal information data supplied from a microcomputer (13) in response to the entry thereto of a temperature resetting command. The voice synthesizer generates a vocal announcement of a new temperature setting. Vocal announcements of successively varying temperature values are generated to allow the vehicle occupant to take a second action when a desired temperature value is announced.

Method and system for controlling the setting temperature of a vehicle

A method for air conditioning for vehicles comprising a step of detecting a temperature of a passenger compartment of a vehicle, an atmospheric temperature and a preset temperature in the initial period of air conditioning, a step of judging the results of comparisons between said temperatures and a step of switching between air conditioning by the circulation of inside air and air conditioning by the introduction of outside air.

Method and an apparatus for air conditioning for vehicles by controlling

A vehicle-mounted air conditioner includes a compressor which, when powered by the vehicle engine, supplies pressurized refrigerant to an evaporator to increase its cooling capacity, a heating unit located downstream of the evaporator and partially occupying the passage of air cooled and directed toward vehicle interior by the evaporator, and a mixing damper pivoted at a point upstream of the heating unit to adjust the amount of cool air presented thereto in relation to the air directed toward the vehicle interior. The compressor is coupled to the engine when the temperature in the vehicle interior indicates a demand for a temperature decrement, or decoupled from the engine when the interior temperature indicates a demand for a temperature increment. A control system detects when the compressor is switched from a first operating state to a second state and initiates a timing action to measure the elapse of time from the time of detection of the occurrence of the transient condition. A time-varying signal is generated when the measured amount of time reaches a predetermined value for controlling the mixing damper to gradually vary the amount of air presented to the heating unit in relation to the air directed to the vehicle interior.

Method and system for controlling a vehicle-mounted air conditioner

In control of the cooling ability of an automobile air conditioner, an electric control method comprises the steps of detecting a deviation between the actual in-car temperature and a desired value upon each lapse of a predetermined period of time, comparing the detected deviation with a predetermined value and maintaining the cooling ability of the air conditioner when the detected deviation is larger than the predetermined value, comparing the detected deviation with the preceding detected deviation when the detected deviation is smaller than or equal to the predetermined value and maintaining the cooling ability of the air conditioner when the detected deviation is larger than or equal to the preceding detected deviation, decreasing the cooling ability of the air conditioner when the detected deviation is smaller than the preceding detected deviation, and increasing the cooling ability of the air conditioner when the detected deviation is larger than each of the predetermined value and the preceding detected deviation, thereby to reduce unnecessary engine power torque losses caused by operation of the air conditioner.

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Kariya, Japan

Kiyoshi Hara