Abstract: A variable valve mechanism for an internal combustion engine includes a rocker arm, a swing cam, and a transmission member which is interposed between the swing cam and a cam and transmits the displacement of the cam to the swing cam. The rocker arm is provided with a rolling roller member which includes a inner ring, an outer ring, and a plurality of rolling elements accommodated between the inner ring and the outer ring. The outer ring contacts with the swing cam. At least one of a first transmission part, in which the displacement of the cam is transmitted from the cam to the transmission member, and a second transmission part, in which the displacement of the cam is transmitted from the transmission member to the swing cam, includes a sliding roller member, wherein a sliding bearing mechanism is constituted between the sliding roller member and the support part.

Abstract: The invention provides a variable valve train for an internal combustion engine, in which attachment and detachment of a rotation drive source can be performed without an affect on a transmission mechanism and environment.

Abstract: A variable valve apparatus uses a camshaft provided rotatably in an internal combustion engine, and has a cam, a rocking cam driven by a cam, a intake valve or an exhaust valve driven by the rocking cam, a control shaft rotatably provided side by side with the camshaft in the engine, and has an oil passage inside to flow oil, a control arm whose one end is held by the control shaft, and the other end is projected from the control shaft, an actuator which rotates the control shaft, and displaces the control arm, a transmission arm which is rotatably connected to the other end of the control arm, and transmits the displacement of the control arm to the rocking cam, and a lubricant passage which is provided inside the control arm, and supplies oil in the oil passage to a part connecting the control arm and transmission arm.

Abstract: A variable valve train apparatus (20) has a formed on a camshaft, a rocking cam driven by the cam, an intake valve or an exhaust valve driven by the rocking cam, a control shaft provided for rotation and side by side with the camshaft, a control arm having one end held on the control shaft and the other end projecting from the control shaft, an actuator which rotates the control shaft to displace the control arm, a transmission arm connected to the other end of the control arm for rocking motion around a rocking axis in substantially the same direction as an axial direction of the control shaft and transmits a displacement of the control arm to the rocking cam, and an adjustment mechanism which adjusts a distance between an axis of the control shaft and the rocking axis of the transmission arm.

Abstract: A variable valve train system for an internal combustion engine wherein the engagement section of a transmission mechanism is lubricated by means of an existing part for driving a variable valve actuation mechanism. Gears forming the engagement section of the transmission mechanism are arranged at a position where the engagement section is lubricated with a lubricant scattered from an endless elongate member for driving a camshaft. The transmission mechanism can therefore be lubricated without the need for additional use of a lubricant passage and its associated elements, besides the existing parts for driving the variable valve actuation mechanism.

Abstract: A valve mechanism for an internal combustion engine includes a first rocker arm (4) connected to an intake or exhaust valve and supported on a rocker shaft (3a), a second rocker arm (5) supported on the rocker shaft for being rotationally driven by a cam, a cylinder (10) formed on one of the first and second rocker arms (4, 5) and a first piston (11) provided in the cylinder, a contacting projection (4a) projecting on the other one of the first and second rocker arms, a return spring (12) for biasing the first piston in a direction in which the first piston contacts with the contacting projection, and a second piston (14) for displacing the first piston to a position at which the first piston does not contact with the contacting projection. The two pistons extend in parallel to each other when the first piston is at a non-contacting position.

Abstract: A valve unit of an internal combustion engine is accommodated in a space between a cylinder head and a rocker cover. The valve unit comprises a camshaft, a variable valve operating mechanism, a sensor, and a retaining member. The camshaft is provided with a cam for each cylinder. The variable valve operating mechanism receives a displacement of the cam, outputs a valve drive output, and continuously variable-controls the valve drive output in accordance with a rotational displacement of a control shaft provided substantially in parallel with the camshaft. The sensor detects the rotational displacement of the control shaft. The retaining member retains the camshaft, the variable valve operating mechanism, and the sensor. The retaining member expose the sensor to the out side of the rocker cover thereby to fix the camshaft, the variable valve operating mechanism, and the sensor to the cylinder head.

Abstract: A variable valve train apparatus (20) of the present invention uses a camshaft (10) provided for rotation in an internal combustion engine (100), a cam (15) formed on the camshaft, a rocking cam (45) which is provided for rocking motion in the internal combustion engine and driven by the cam, an intake valve (5) or an exhaust valve (6) which is driven by the rocking cam, a control shaft (11) provided for rotation and side by side with the camshaft in the internal combustion engine, a control arm (72) having one end held on the control shaft and the other end projecting from the control shaft, an actuator (43) which rotates the control shaft to displace the control arm, a transmission arm (35) which is connected to the other end of the control arm for rocking motion around a rocking axis in substantially the same direction as an axial direction of the control shaft and transmits a displacement of the control arm to the rocking cam, and an adjustment mechanism (80) which adjusts a distance between an axis of th

Abstract: The invention relates to a valve mechanism for an internal combustion engine, and it is an object of the invention to make it possible to carry out changeover of the driving mode rapidly and with certainty.

Abstract: The invention provides a variable valve train for an internal combustion engine, in which attachment and detachment of a rotation drive source can be performed without an affect on a transmission mechanism and environment.

Abstract: A variable valve train system for an internal combustion engine wherein the engagement section of a transmission mechanism is lubricated by means of an existing part for driving a variable valve actuation mechanism. Gears forming the engagement section of the transmission mechanism are arranged at a position where the engagement section is lubricated with a lubricant scattered from an endless elongate member for driving a camshaft. The transmission mechanism can therefore be lubricated without the need for additional use of a lubricant passage and its associated elements, besides the existing parts for driving the variable valve actuation mechanism.

Abstract: A variable valve mechanism for an internal combustion engine includes a rocker arm, a swing cam, and a transmission member which is interposed between the swing cam and a cam and transmits the displacement of the cam to the swing cam. The rocker arm is provided with a rolling roller member which includes a inner ring, an outer ring, and a plurality of rolling elements accommodated between the inner ring and the outer ring. The outer ring contacts with the swing cam. At least one of a first transmission part, in which the displacement of the cam is transmitted from the cam to the transmission member, and a second transmission part, in which the displacement of the cam is transmitted from the transmission member to the swing cam, includes a sliding roller member, wherein a sliding bearing mechanism is constituted between the sliding roller member and the support part.

Abstract: A variable valve apparatus uses a camshaft provided rotatably in an internal combustion engine, and has a cam, a rocking cam driven by a cam, a intake valve or an exhaust valve driven by the rocking cam, a control shaft rotatably provided side by side with the camshaft in the engine, and has an oil passage inside to flow oil, a control arm whose one end is held by the control shaft, and the other end is projected from the control shaft, an actuator which rotates the control shaft, and displaces the control arm, a transmission arm which is rotatably connected to the other end of the control arm, and transmits the displacement of the control arm to the rocking cam, and a lubricant passage which is provided inside the control arm, and supplies oil in the oil passage to a part connecting the control arm and transmission arm.

Abstract: A valve unit of an internal combustion engine is accommodated in a space between a cylinder head and a rocker cover. The valve unit comprises a camshaft, a variable valve operating mechanism, a sensor, and a retaining member. The camshaft is provided with a cam for each cylinder. The variable valve operating mechanism receives a displacement of the cam, outputs a valve drive output, and continuously variable-controls the valve drive output in accordance with a rotational displacement of a control shaft provided substantially in parallel with the camshaft. The sensor detects the rotational displacement of the control shaft. The retaining member retains the camshaft, the variable valve operating mechanism, and the sensor. The retaining member expose the sensor to the out side of the rocker cover thereby to fix the camshaft, the variable valve operating mechanism, and the sensor to the cylinder head.

Abstract: A rotational speed detector such as a wheel speed detector has an elongate housing containing a detector unit therein. The detector unit is a molded unit having a sensor element and an integrated circuit chip for processing sensor signals. A front wall of the elongate housing faces a magnetized rotor rotated by a rotating object so that the rotational speed of the rotor is detected by the detector unit. After the housing and a center rod having a terminal wire for leading out the detected electrical signals are connected to each other, a resin mold covering an outside of the center rod and a part of the housing is formed to formulate a unitary body of the rotational speed detector.

Abstract: A rotational speed detector such as a wheel speed detector has an elongate housing containing a detector unit therein. The detector unit is a molded unit having a sensor element and an integrated circuit chip for processing sensor signals. A front wall of the elongate housing faces a magnetized rotor rotated by a rotating object so that the rotational speed of the rotor is detected by the detector unit. After the housing and a center rod having a terminal wire for leading out the detected electrical signals are connected to each other, a resin mold covering an outside of the center rod and a part of the housing is formed to formulate a unitary body of the rotational speed detector.

Abstract: The rotation of a rotating magnet is detected by magnetic sensors. The rotational speed is detected from pulse signals detected by magnetic sensors, and the rotational direction is detected from the difference in a shift in phase. Signals different in pulse width are generated according to the rotational direction. A signal selection circuit outputs a pulse signal with timing for the rotational speed. A rotational speed determining circuit outputs a decision signal Sf of a high level when the rotational speed reaches a predetermined speed. When a self-diagnostic circuit determines that the magnetic sensors have malfunctioned, a binary error code generating circuit generates an error signal Sg and a 4-bit error code signal Sh. When the signal Sf of the rotating magnet is brought to a high level, the signal selection circuit outputs an error code signal and allows output an output current Is.

Abstract: The rotation of a rotating magnet is detected by magnetic sensors. The rotational speed is detected from pulse signals detected by magnetic sensors, and the rotational direction thereof is detected from the difference in the way of making a shift in phase. Signals different in pulse width are generated according to the rotational direction. A signal selection circuit outputs a corresponding pulse signal with timing for the rotational speed. A rotational speed determining circuit outputs a decision signal Sf of a high level when the rotational speed reaches a predetermined speed. When a self-diagnostic circuit determines that the magnetic sensors have malfunctioned, a binary error code generating circuit generates an error signal Sg and a 4-bit error code signal Sh.

Abstract: A suspension control system capable of controlling a suspension of an automotive vehicle in such a manner as to improve the riding comfort and maneuverability of the vehicle without the need for many sensors is disclosed, in which a speed difference signal obtained by subtracting an estimated vehicle speed from a wheel speed is filtered with band-pass filters which pass sprung resonance frequency components and unsprung resonance frequency components, respectively. After amplification, the filtered speed difference are compared with a reference value so that a damping force of a shock absorber is set in accordance with a road surface condition. Since the damping force of the shock absorber is shifter by using only information based on the wheel speed detected by a wheel speed sensor, a total number of sensor to be mounted on the vehicle for controlling the suspension can be considerably reduced. The suspension control system is simple in construction and can be manufactured at a relatively low cost.

Abstract: Adhesives prepared by dissolving polyvinyl alcohol, a filler and a water-soluble boron compound in water are described. These adhesives are "cold-set" adhesives which are liquid at a temperature of 60.degree. C. or more, but lose their fluidity to gelatinize on cooling at a temperature higher than 20.degree. C., they are very useful for a cold corrugation system.