Abstract:
A valve timing control apparatus of an internal combustion engine may include a driving rotational body to which torque is transmitted from a crankshaft, a driven rotational body fixed to a camshaft to which torque is transmitted from the driving rotational body, an electric motor disposed between the driving rotational body and the driven rotational body and relatively rotating the driving rotational body and the driven rotational body when electric power is applied thereto, and a deceleration mechanism that decelerates a rotational speed of the electrical motor and transmit the decelerated rotational speed to the driven rotational body.
Abstract:
Piston engine, with a cylinder housing (11) with at least two cylinders (12, 13) each containing a piston (17, 18) with a piston rod (19, 20) which is linked to a rocker member (23). The rocker member is integrated with a crank mechanism (26) carried by a shaft (14) being journalled in the cylinder housing. The shaft is operating a valve (15) integrated in the cylinder housing (11). The rocker member (23) is annular and linked to the crank mechanism (26) over a connecting element (31). This piston engine can be provided as a steam motor and as a combustion motor or Stirling motor. It can also provide a pump or compressor.
Abstract:
A valve mechanism includes a poppet type valve (11), a valve lever (20) pivotally mounted at one end and attached at the other end to the end of the stem (12) of valve (11), the valve lever (20) defines a track (25) in which is located a drive pin (39) and a drive mechanism (30, 35, 37, 38) is arranged to drive the drive pin (39) in oscillatory manner; the track (25) has a first portion (28) which, when the valve (11) is closed is engaged by the drive pin (39) and coincides with the path of the drive pin (39), and a second portion (26, 27) which diverges from the path of the drive pin (39) so that when engaged by the drive pin (39) movement of the drive pin (39) will cause the valve lever (20) to move, opening and closing the valve (11). Preferably the mean position of oscillation of the drive pin (39) is adjustable so that the duration and amplitude of valve opening may be varied.
Abstract:
A valve mechanism includes a poppet type valve (11), a valve lever (20) pivotally mounted at one end and attached at the other end to the end of the stem (12) of valve (11), the valve lever (20) defines a track (25) in which is located a drive pin (39) and a drive mechanism (30, 35, 37, 38) is arranged to drive the drive pin (39) in oscillatory manner; the track (25) has a first portion (28) which, when the valve (11) is closed is engaged by the drive pin (39) and coincides with the path of the drive pin (39), and a second portion (26, 27) which diverges from the path of the drive pin (39) so that when engaged by the drive pin (39) movement of the drive pin (39) will cause the valve lever (20) to move, opening and closing the valve (11). Preferably the mean position of oscillation of the drive pin (39) is adjustable so that the duration and amplitude of valve opening may be varied.
Abstract:
PURPOSE: A continuously variable valve lift device for a vehicle is provided to reduce manufacturing costs by the removal of an exhaust CVVT. CONSTITUTION: A continuously variable valve lift device for a vehicle comprises a drive shaft(10), a rocker-arm shaft(30), an output cam(45), and a variable drive unit(50). The drive shaft engages with the crank shaft. The drive shaft has a drive cam(11) on the outer circumference thereof. The rocker-arm shaft is separated from the drive shaft. One end of the rocker-arm shaft engages with the drive cam and supports a rocker arm(40). The output cam is installed in the drive shaft to be rotatable and engages with the other end of the rocker arm.