Abstract: A vehicle suspension apparatus includes: a shock absorber that has a cylinder outer tube; a dust cover whose upper area is fixed on an upper support side; and a coil spring that surrounds the dust cover. The outer tube has a first engagement unit provided on a portion of the circumference of the outer tube. The dust cover a second engagement unit provided on a portion of the circumference of a lower area of the dust cover. The second engagement unit becomes engaged with the first engagement unit. The first engagement unit provided around the outer tube and the second engagement unit provided around the lower area of the dust cover become engaged with each other by rotating the dust cover around the shaft of the shock absorber.

Abstract: A vehicle suspension apparatus includes: a shock absorber that has a cylinder outer tube; a dust cover whose upper area is fixed on an upper support side; and a coil spring that surrounds the dust cover. The outer tube has a first engagement unit provided on a portion of the circumference of the outer tube. The dust cover a second engagement unit provided on a portion of the circumference of a lower area of the dust cover. The second engagement unit becomes engaged with the first engagement unit. The first engagement unit provided around the outer tube and the second engagement unit provided around the lower area of the dust cover become engaged with each other by rotating the dust cover around the shaft of the shock absorber.

Abstract: Angle sensor device has magnetic force detectors detecting alternation of magnetic force caused by rotation of a throttle gear. The magnetic force detectors are buried in a molded body of the angle sensor device constructed of foamed resin. The magnetic force detectors each has a sensing unit detecting alteration of magnetic force and a computing unit computing based on signals from the sensing unit and outputting signals depending on the alteration of magnetic force and is formed in L-shape. Two of the magnetic force detectors are placed opposite each other such that one of the sensing units is disposed on the other sensing unit. The molded body has a cavity surrounded by the magnetic force detectors.

Abstract: An electromagnetic PCV valve includes a valve seat, a valve element, a step motor for moving the valve element, and a housing that houses the valve seat, the valve element, and the step motor. When the valve element is moved by the step motor, a size (an opening degree) of a blow-by gas passage defined between the valve seat and the valve element is changed. The step motor is configured to selectively receive energization for moving the valve element and energization for holding the valve element in a fixed position. A heating apparatus of the PCV valve 1 includes a cover member and an output shaft that conducts heat generated in the step motor by energization to the valve element and the valve seat, and an electronic control unit (ECU) for conducting energization of the step motor to hold the valve element in the fixed position.

Abstract: Angle sensor device has magnetic force detectors detecting alternation of magnetic force caused by rotation of a throttle gear. The magnetic force detectors are buried in a molded body of the angle sensor device constructed of foamed resin. The magnetic force detectors each has a sensing unit detecting alteration of magnetic force and a computing unit computing based on signals from the sensing unit and outputting signals depending on the alteration of magnetic force and is formed in L-shape. Two of the magnetic force detectors are placed opposite each other such that one of the sensing units is disposed on the other sensing unit. The molded body has a cavity surrounded by the magnetic force detectors.

Abstract: A dynamic damper containing a mass and an elastic connector is connected to an inner tube to provide the dynamic damper integrally as a part of an apparatus. Since the dynamic damper is integrally provided as part of the apparatus (cab mount) by connecting the dynamic damper containing the mass and the elastic connector to the inner tube via a connecting member in the cab mount, it is possible to eliminate work for assembling the dynamic damper separately from the cab mount. Further, the dynamic damper may be constructed integrally as part of the cab mount.

Abstract: An electromagnetic PCV valve includes a valve seat, a valve element, a step motor for moving the valve element, and a housing that houses the valve seat, the valve element, and the step motor. When the valve element is moved by the step motor, a size (an opening degree) of a blow-by gas passage defined between the valve seat and the valve element is changed. The step motor is configured to selectively receive energization for moving the valve element and energization for holding the valve element in a fixed position. A heating apparatus of the PCV valve 1 includes a cover member and an output shaft that conducts heat generated in the step motor by energization to the valve element and the valve seat, and an electronic control unit (ECU) for conducting energization of the step motor to hold the valve element in the fixed position.

Abstract: A blow-by gas returning apparatus is arranged to allow blow-by gas leaking from a combustion chamber of an engine into a crank chamber to flow in an intake passage through a returning passage, and to regulate a flow rate of the blow-by gas by a PCV valve placed in the returning passage. A supercharger is placed in the intake passage. The PCV valve is adapted to change a position of the valve element by electromagnetic force to change a passage opening area. A check valve is placed integral with the PCV valve in the returning passage between the valve element of the PCV valve and the intake passage. The check valve is arranged to inhibit back-flow of the gas from the intake passage.

Abstract: A throttle control apparatus comprises a throttle valve placed in an intake passage, a motor for driving the throttle valve, an electronic control unit (ECU) for controlling the motor, and a throttle sensor for detecting an actual opening degree of the throttle valve. The ECU determines that the throttle valve is frozen when the actual opening degree does not reach a target opening degree even after a driving time for driving the motor has exceeded a predetermined time, and then stores the actual opening degree at the time as an icing opening degree. The ECU supplies a driving duty to cause the motor to produce required driving torque for removal of icing and reverses the driving duty by open control, and controls the motor to bring an accumulated value of a deviation between the target opening degree and the icing opening degree to zero, thereby repeatedly swinging the throttle valve.

Abstract: A PCV valve comprises: a valve seat; a valve element provided movable relative to the valve seat; a step motor for moving the valve element; and a housing which houses the valve seat, the valve element, and the step motor. The PCV valve is arranged to operate the step motor by energization to move the valve element with respect to the valve seat so that an area of a blowby gas passage formed between the valve seat and the valve element is changed. An output shaft of the step motor is a member having a higher thermal conductivity than the housing. The step motor, the valve element, and the valve seat are enclosed in a cylindrical case. The step motor and the valve seat are placed in contact with the case.

Abstract: An electronic throttle control apparatus includes: a motor; a throttle valve which is driven by the motor to open and close; a throttle sensor for detecting an actual opening angle of the throttle valve. This electronic throttle control apparatus is arranged to control an opening angle of the throttle valve by driving the motor so that the actual opening angle detected by the throttle sensor becomes a target opening angle, the apparatus further includes a fully closing stopper, and an abutting determination unit for determining whether the throttle valve abuts against the fully closing stopper. The abutting determination unit is arranged to determine whether the throttle valve abuts against the fully closing stopper based on a determination condition preset with respect to each one of a plurality of duty ratio ranges.

Abstract: A dynamic damper containing a mass and an elastic connector is connected to an inner tube to provide the dynamic damper integrally as a part of an apparatus. Since the dynamic damper is integrally provided as part of the apparatus (cab mount) by connecting the dynamic damper containing the mass and the elastic connector to the inner tube via a connecting member in the cab mount, it is possible to eliminate work for assembling the dynamic damper separately from the cab mount. Further, the dynamic damper may be constructed integrally as part of the cab mount.

Abstract: A PCV valve include a housing which internally has a valve chamber including an entrance at one end and an exit at the other end in an axial direction of the valve chamber. In the valve chamber, a valve element which is axially movable and a spring which urges the valve element toward the entrance are provided. An electric heater is provided in the housing. The valve element includes an end which is movable close to the entrance. The electric heater is arranged in such a manner as to surround the valve chamber from the exit to the end of the valve element closer to the entrance. The electric heater includes a cylindrical bobbin made of a high heat-conductive material and a coil wound on the outer periphery of the bobbin. The bobbin has an inner peripheral surface forming a large part of an inner peripheral surface of the valve chamber.

Abstract: A blowby gas passage structure for returning a blowby gas leaking into a crankcase of an internal combustion engine to the internal combustion engine comprises: an intake passage which can be connected to the internal combustion engine for allowing the blowby gas to be returned to the internal combustion engine, and in which a throttle valve is disposed; a first passage for allowing the blowby gas to be introduced into the intake passage downstream from the throttle valve, the first passage including a joint portion connected to the intake passage; and a heating device provided in the joint portion of the first passage in such a manner as to be integral with the intake passage.

Abstract: An electronic throttle control apparatus includes: a motor; a throttle valve which is driven by the motor to open and close; a throttle sensor for detecting an actual opening angle of the throttle valve. This electronic throttle control apparatus is arranged to control an opening angle of the throttle valve by driving the motor so that the actual opening angle detected by the throttle sensor becomes a target opening angle, the apparatus further includes a fully closing stopper, and an abutting determination unit for determining whether the throttle valve abuts against the fully closing stopper. The abutting determination unit is arranged to determine whether the throttle valve abuts against the fully closing stopper based on a determination condition preset with respect to each one of a plurality of duty ratio ranges.

Abstract: A throttle control apparatus comprises a throttle valve placed in an intake passage, a motor for driving the throttle valve, an electronic control unit (ECU) for controlling the motor, and a throttle sensor for detecting an actual opening degree of the throttle valve. The ECU determines that the throttle valve is frozen when the actual opening degree does not reach a target opening degree even after a driving time for driving the motor has exceeded a predetermined time, and then stores the actual opening degree at the time as an icing opening degree. The ECU supplies a driving duty to cause the motor to produce required driving torque for removal of icing and reverses the driving duty by open control, and controls the motor to bring an accumulated value of a deviation between the target opening degree and the icing opening degree to zero, thereby repeatedly swinging the throttle valve.

Abstract: An electronic throttle control apparatus is provided with an electronic throttle (1) including a throttle valve (4) which is opened and closed by a motor (5), and a microcomputer (11) which controls the motor (5). The microcomputer (11) calculates a deviation between a target opening degree which is set by detection of an accelerator sensor (5) and an actual opening degree which is detected by a throttle sensor (6) to calculate a motor control amount in accordance with the deviation and a control gain in correspondence to the deviation. The microcomputer 11 sets a control gain which becomes smaller as the deviation becomes larger, and limits the control gain by the previous control gain at a time when the control gain is larger than the previous control gain. The microcomputer (11) cancels the limit of the control gain when the calculated actual opening degree change is reduced from a predetermined value.

Abstract: An electronic throttle control apparatus is provided with an electronic throttle (1) including a throttle valve (4) which is opened and closed by a motor (5), and a microcomputer (11) which controls the motor (5). The microcomputer (11) calculates a deviation between a target opening degree which is set by detection of an accelerator sensor (5) and an actual opening degree which is detected by a throttle sensor (6) to calculate a motor control amount in accordance with the deviation and a control gain in correspondence to the deviation. The microcomputer 11 sets a control gain which becomes smaller as the deviation becomes larger, and limits the control gain by the previous control gain at a time when the control gain is larger than the previous control gain. The microcomputer (11) cancels the limit of the control gain when the calculated actual opening degree change is reduced from a predetermined value.

Abstract: An electronic throttle control system performs open-loop control on a motor of an electronic throttle by pulse width modulation (PWM) control based on a target opening amount TAR set by an accelerator sensor. A microcomputer controls the current output to the motor by periodically controlling an excitation width of an on-pulse with a specified duty ratio. The microcomputer calculates a duty ratio corresponding to the set target opening amount TAR with an accuracy higher than its own resolution. When the calculated duty ratio exceeds a value of the output resolution, the microcomputer adds, e.g., every other cycle, a value having the output resolution to the duty ratio of the on-pulse which is periodically controlled, and averages the current output to the motor.

Abstract: The throttle valve controller 1 includes a failure detecting device 11 for detecting failures in the first and second accelerator sensors 2 and 3 based on the first input signal VAPS1 outputted from the first accelerator sensor 2 and the second input signal VAPS2 outputted from the second accelerator sensor 3. A control signal computing device 12 computes a first control signal T1 from the first and second input signals in response to the result of detection by the failure detecting device 11. A control signal correcting device effects primary delay processing on the first control signal T1, thereafter restricting the so-processed signal to a guard value or less and outputs the signal therefrom as a second control signal VAPS. A throttle control device 14 controls the degree of opening of the throttle valve 9 based on the second control signal VAPS.