Patents Assigned to Toyota Jidosha Kogyo Kabushiki Kaisha
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Patent number: 4479184Abstract: An intake system of an engine comprising a main intake passage which has a throttle valve therein. The throttle valve is controlled by a main actuator. An auxiliary intake passage is branched off from the main intake passage located upstream of the throttle valve and is connected to the main intake passage located downstream of the throttle valve. An auxiliary valve, controlled by a subactuator, is arranged in the auxiliary intake passage. The vehicle speed is controlled by the main actuator when the vehicle speed is too increased or too reduced relative to a set speed to be maintained. Contrary to this, the vehicle speed is controlled by the subactuator when the vehicle speed is maintained at a speed near the set speed.Type: GrantFiled: July 24, 1981Date of Patent: October 23, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventor: Jiro Nakano
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Patent number: 4479186Abstract: A method for controlling an internal combustion engine by controlling the amount of the fuel injection and the ignition timing of the engine using the output signal of a computer which takes the signals produced by the air intake pressure sensor and the rotational speed sensor, calculates the air intake pressure difference .DELTA.Pm between the preceding and the present time unit and the rotational speed difference .DELTA.N between the preceding and the present time unit, calculates the correction value from the calculated .DELTA.Pm and .DELTA.N, and modifies the control value for the engine.Type: GrantFiled: August 19, 1981Date of Patent: October 23, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Mitsunori Takao, Toshiaki Mizuno
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Patent number: 4478274Abstract: A control circuit for a vehicle-mounted air conditioner having plural dampers therein comprises a manual command entry unit for entering command signals to a computer unit. The computer unit includes a first computer constantly powered by a vehicle-mounted storage battery to receive a temperature resetting command signal from the entry unit and a second computer which is powered from the battery through an engine ignition key switch to receive control data from the first computer to control the air conditioner. A plurality of operating parameter sensors also supplies sensed operating parameters to the second computer to permit it to control one or more of the dampers to direct conditioned air to the vehicle compartment. A display unit receives data from the computer unit to provide visual display of the reference temperature and the operating conditions of the air conditioner.Type: GrantFiled: October 16, 1981Date of Patent: October 23, 1984Assignees: Nippondenso Co., Ltd., Toyota Jidosha Kogyo Kabushiki KaishaInventors: Masanori Naganoma, Yoshiharu Kato, Atsunori Saito, Yoshimichi Hara, Katsuaki Matsushima
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Patent number: 4476740Abstract: A shift mechanism for a change-speed gear transmission includes a manual gearshift lever arranged to be selectively shiftable toward forward speed-ratio and reverse-ratio positions at the same gate in a gearshift pattern, a movable member integral with a selector shaft mounted within a housing assembly of the gear transmission for both axial and rotary movement and being operatively connected to the gearshift lever to be axially moved in selecting operation of the gearshift lever toward the gate and to be rotated in shifting operation of the gearshift lever toward one of the forward speed-ratio and reverse-ratio positions.Type: GrantFiled: March 19, 1982Date of Patent: October 16, 1984Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Aisin Seiki Kabushiki KaishaInventors: Shuichiro Ida, Shoichi Ooshima, Ichiro Horiuchi, Mitsufumi Nishu
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Patent number: 4476828Abstract: An engine has a main intake passage having a throttle valve therein. A bypass passage is branched off from the main intake passage located upstream of the throttle valve and is connected to the main intake passage located downstream of the throttle valve. A flow control valve, actuated by a stepper motor, is arranged in the bypass passage. When the idling speed of the engine is increased beyond a predetermined upper limit of the engine speed, the stepper motor is rotated in a rotating direction wherein the flow area of the flow control valve is reduced. Contrary to this, when the idling speed of the engine is reduced below a predetermined lower limit of the engine speed, the stepper motor is rotated in a direction wherein the flow area of the flow control valve is increased.Type: GrantFiled: July 27, 1981Date of Patent: October 16, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Nobuyuki Kobayashi, Hiroshi Ito
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Patent number: 4476970Abstract: A direct coupled clutch is provided in parallel to a fluid type torque converter in an automatic transmission, and supply of oil pressure to a hydraulic servo of the direct coupled clutch is controlled by an electromagnetic valve. Alteration of engaging condition of engaging elements in a transmission gear is carried out by maintaining the direct coupled clutch in the disengaging condition. As a result, difference of torque between the engine side of the engaging elements and the drive wheel side, which difference is produced in the speed change, is absorbed by the fluid type torque converter so that impact is restrained.Type: GrantFiled: October 19, 1981Date of Patent: October 16, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventor: Hiroshi Ito
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Patent number: 4475504Abstract: The flow rate of air passing through an air bypass passage which bypasses a throttle valve in an intake passage of an internal combustion engine during idling is corrected depending upon the atmospheric pressure around the engine. Thus, the idling speed of the engine can be stably controlled even at high altitudes.Type: GrantFiled: February 3, 1982Date of Patent: October 9, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventor: Kazuyoshi Mizuno
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Patent number: 4475490Abstract: The present invention proposes a hydraulic valve lifter used in an internal combustion engine. The valve lifter has a body consisting of a hollow cylindrical portion accommodating a cylindrical plunger and a lower end portion engaging with a cam controlling the valve motion. The two portions are joined together by welding. The bottom of the plunger is cut out annularly for preventing interference between the plunger and flash, which flash is caused by welding and remains in the inner recess of the lifter body.Type: GrantFiled: May 28, 1982Date of Patent: October 9, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Katsuyasu Oono, Gozo Kaji
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Patent number: 4476532Abstract: An engine control method generally applicable to those control systems of the engine such as an ignition system, fuel injection system, etc., which are controlled to optimum operation in accordance with the engine operating conditions. In this method, an operation starting timing and an operation ending timing of the control system, e.g., in the case of the ignition system, an ignition coil energization starting timing and an ignition timing (an energization ending timing) are computed at each of predetermined computing cycles, and the latest computed ignition timing, for example, which is computed after the coil energization has been started further taking into consideration of the actual coil energization timing and a minimum required energization period is compared with an ignition timing computed in the preceding computing cycle, and a corrective computation of the latest computed ignition timing is carried out depending on the result of the comparison to obtain an optimum ignition timing.Type: GrantFiled: August 18, 1982Date of Patent: October 9, 1984Assignees: Nippondenso Co., Ltd., Toyota Jidosha Kogyo Kabushiki KaishaInventors: Susumu Akiyama, Kenzo Ito, Hiroyasu Fukaya, Haruhiko Ogiso, Yuji Hirabayashi, Takahide Kawamura
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Patent number: 4475381Abstract: The absolute intake manifold pneumatic pressure and the atmospheric pressure are selectively detected by a single absolute pneumatic pressure sensor, and the relative intake manifold pneumatic pressure is calculated from the detected values. The detection of the atmospheric pressure by the sensor is carried out only when the engine is operated under a predetermined operating condition.Type: GrantFiled: December 22, 1981Date of Patent: October 9, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Takayoshi Nakatomi, Keiji Aoki
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Patent number: 4474149Abstract: A valve apparatus of a solenoid drive type having a valve member in a housing defining an inlet port and first and second outlet ports. The valve member connects the inlet port to the second outlet port while closing the first outlet port when no electric current is received by the apparatus. The valve member controls the opening of the first outlet port while maintaining the second outlet port closed when an electric current larger than a predetermined offset value is applied to the apparatus. When the electric current is equal to the offset value, the valve member closes both the first and the second outlet ports.Type: GrantFiled: January 4, 1984Date of Patent: October 2, 1984Assignees: Nippon Soken, Inc., Toyota Jidosha Kogyo Kabushiki KaishaInventors: Takaharu Idogaki, Hisasi Kawai, Kyo Hattori, Kazuhiro Sakurai
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Patent number: 4474074Abstract: In a transmission which comprises a reverse gear secured to a main shaft, a counter reverse gear secured to a counter shaft, and an axially movable reverse idler gear arranged between the reverse gear and the counter gear to mesh with them in order to establish and break the connection between the reverse gear and the counter gear, the reverse idler gear being provided, on its tooth surface corresponding to the counter reverse gear, with a tapered tooth trace having a tapered angle .beta. which is larger than a tapered angle .alpha. of a tapered tooth trace on the tooth surface of the counter reverse gear that meshes with the reverse idler gear.Type: GrantFiled: August 24, 1981Date of Patent: October 2, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Fumie Nakao, Nobuaki Katayama, Shyogo Kato, Takashi Yamamoto
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Patent number: 4474081Abstract: In an altimetric compensation apparatus and method for a speed change pattern of an automatic transmission, first to third memory locations corresponding respectively to idling, low load and highload conditions of an engine are provided. A feedback air fuel ratio is calculated on the basis of feedback signals from an air fuel ratio sensor. A value in the memory corresponding to the detected running condition of the engine is compensated on the basis of deviation of the feedback air fuel ratio from the base air fuel ratio. When the values in at least two memory locations deviate by at least a predetermined value from the base value, the altimetric compensation value is adjusted and the speed change pattern is altered on the basis of the altimetric compensation value thus obtained.Type: GrantFiled: November 20, 1981Date of Patent: October 2, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Yukio Kinugasa, Hiroki Matsuoka, Takehisa Yaegashi
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Patent number: 4473139Abstract: A dustcover used in a disc brake of a vehicle for covering a disc rotor disposed in a wheel disc of cup shape from the opposite side of the wheel disc so as to protect the rotor from splashed mud water. The dustcover is provided with a pair of vent openings respectively open to the frontward direction and the rearward direction of the vehicle formed thereon at a lowered portion thereof than the rotational axis of the rotor. An air collecting portion is formed at the frontwardly open vent opening, gradually expanding in the air flowing area in the frontward direction of the vehicle. The front end of the air collecting portion is projected out of the cup-shaped wheel disc. The air collected by the air collecting portion is allowed to pass rearwardly through the dustcover right along the lower half portion of the rotor for cooling it.Type: GrantFiled: January 27, 1984Date of Patent: September 25, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventors: Hiroyuki Oka, Hiroshi Uemura
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Patent number: 4473243Abstract: A shoulder webbing anchoring device according to the present invention includes a side anchor fixed on a window frame or a side wall of a vehicle body and a webbing anchor holding one end of the webbing and coupled to the side anchor through an anchor pin having an enlarged head. The side anchor has small and large diameter holes partially overlapping each other, the small diameter hole being smaller than the enlarged head and the large diameter hole being larger than the enlarged head, whereby when the anchor pin is in the small diameter hole, the webbing anchor is rotatably coupled with the side anchor, and when the anchor pin is in the large diameter hole, the webbing anchor is allowed to be separated from the side anchor.Type: GrantFiled: January 28, 1982Date of Patent: September 25, 1984Assignee: Toyota Jidosha Kogyo Kabushiki KaishaInventor: Hisashi Ogawa
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Patent number: 4472262Abstract: An oxygen concentration detector provided with an oxygen concentration sensor further provided with an oxygen ionic conductor, a cathode placed on one surface of the oxygen ionic conductor, an anode placed on the other surface of the oxygen ionic conductor, and a layer convering the cathode for regulating the diffusion of oxygen gas toward the cathode. Temperature compensation is applied to the output of the detector which is inherently influenced by the temperature of the sensor. More specifically, an oxygen concentration detector is provided with the foregoing oxygen concentration sensor, and voltage or current is alternatively supplied to the sensor to measure a limiting current of the sensor and internal resistance of the sensor, and the current or the voltage produced by the foregoing application of voltage or current, and a temperature compensation is applied to the detected magnitude of limiting current according to the internal resistance of the sensor.Type: GrantFiled: May 24, 1982Date of Patent: September 18, 1984Assignees: Kabushiki Kaisha Toyota Chuo Kenkyusho, Toyota Jidosha Kogyo Kabushiki KaishaInventors: Haruyoshi Kondo, Keiichi Saji, Takashi Takeuchi, Yasuhiro Otsuka, Toshinobu Furutani, Mari Okazaki
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Patent number: 4471736Abstract: An ignition timing control system for an internal combustion engine having a plurality of cylinders in which at each of different load conditions determined by the operating conditions of the engine the ignition timing for each cylinder is periodically retarded to cause a nonknocking ignition and the resulting background vibration levels detected by a knock sensor are stored in a memory. During the normal operation, the vibration level detected by the knock sensor with respect to each cylinder is compared with the corresponding background vibration level stored under the same load condition to detect the presence of knocking and thereby to determine the proper ignition timing.Type: GrantFiled: February 25, 1982Date of Patent: September 18, 1984Assignees: Nippondenso Co., Ltd., Toyota Jidosha Kogyo Kabushiki KaishaInventors: Matsujyu Yoshida, Nobuyuki Inoue, Hideo Miyagi, Toshio Suematsu, Akihiko Kido
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Patent number: 4472775Abstract: In a bar-graph type display method and system for automotive vehicle for monitoring an engine speed of the automotive vehicle and displaying the result of monitoring stepwise, when an indication level adjacent to the present indication level is detected a predetermined number of times successively, the present indication level is changed to the adjacent indication level, and when an indication level other than the present or adjacent indication level is detected the present indication level is changed to the detected indication level immediately.Type: GrantFiled: November 17, 1981Date of Patent: September 18, 1984Assignees: Nippondenso Co., Ltd., Toyota Jidosha Kogyo Kabushiki KaishaInventors: Tooru Mizuno, Yutaka Imai
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Patent number: 4470478Abstract: A vehicle speed control apparatus for automatically maintaining the vehicle speed of an automobile at a desired speed without the operation of the accelerator pedal, which apparatus includes an increase switch and a speed-increase means for continuously increasing the opening degree of the throttle valve when the increase switch is operated. When the increase switch is operated, the desired speed changes in response to the increasing actual speed of the automobile. The desired speed is finally determined to be the value of the actual vehicle speed just before the increase switch returns to the non-operating condition.Type: GrantFiled: August 19, 1981Date of Patent: September 11, 1984Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Fujitsu Ten LimitedInventors: Kazuhiko Hayashi, Jiro Masuda
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Patent number: 4470617Abstract: In a webbing lock device, there are provided a pair of lock members for clamping the intermediate portion of an occupant restraining webbing so as to bring an occupant into a restrained state in the event of an emergency situation of a vehicle, and resin material deformable in accordance with irregularities on the surfaces of the webbing, when the webbing is clamped, is provided on the surface of at least one of the lock members, whereby frictional resistances between the webbing and the lock members are increased and concentration of stress is avoided.Type: GrantFiled: January 12, 1982Date of Patent: September 11, 1984Assignees: Toyota Jidosha Kogyo Kabushiki Kaisha, Kabushiki Kaisha Tokai-Rika-Denki-SeisakushoInventors: Makoto Yamada, Toshio Gyoda, Takashi Kawaharazaki