摘要:
A lubricating device for an internal combustion engine includes an oil tank chamber defined by being separated from a crank chamber by a partition wall that is formed between a crankcase and a crankcase cover of the internal combustion engine. Oil pumped by a scavenge pump is supplied to a tank supply port which is open at an upper portion of the oil tank chamber to the oil tank chamber. The oil stored in the oil tank chamber is sucked from a feed suction port which is open at a lower portion of the oil tank chamber to be supplied to respective regions for lubrication of the internal combustion engine by a feed pump. An oil passage penetrating inside the oil tank chamber is formed below the tank supply port at an upper portion of the oil tank chamber.
摘要:
A lubricating device for an internal combustion engine includes an oil tank chamber defined by being separated from a crank chamber by a partition wall that is formed between a crankcase and a crankcase cover of the internal combustion engine. Oil pumped by a scavenge pump is supplied to a tank supply port which is open at an upper portion of the oil tank chamber to the oil tank chamber. The oil stored in the oil tank chamber is sucked from a feed suction port which is open at a lower portion of the oil tank chamber to be supplied to respective regions for lubrication of the internal combustion engine by a feed pump. An oil passage penetrating inside the oil tank chamber is formed below the tank supply port at an upper portion of the oil tank chamber.
摘要:
A transmission assembly includes a shift drum operable to rotate in first and second directions. The shift drum includes a common speed change position, where both a fastest forward gear and a reverse gear are capable of becoming engaged, in such a manner that a reverse stopper arm fits at a first end of a reverse cam groove formed on the shift drum. When the shift drum is rotated in the second rotation direction, opposite to the first direction, from a state where the reverse gear is engaged, the reverse stopper arm surmounts the outer periphery of the shift drum from the first end of the reverse cam groove, without requiring the application of an external force thereto, so as to become detached and to move towards a second end of the reverse cam groove.
摘要:
A transmission assembly includes a shift drum operable to rotate in first and second directions. The shift drum includes a common speed change position, where both a fastest forward gear and a reverse gear are capable of becoming engaged, in such a manner that a reverse stopper arm fits at a first end of a reverse cam groove formed on the shift drum. When the shift drum is rotated in the second rotation direction, opposite to the first direction, from a state where the reverse gear is engaged, the reverse stopper arm surmounts the outer periphery of the shift drum from the first end of the reverse cam groove, without requiring the application of an external force thereto, so as to become detached and to move towards a second end of the reverse cam groove.
摘要:
In a clutch device wherein a plurality of clutch plates are relatively non-rotatably engaged with a clutch outer, a plurality of clutch disks disposed alternately with the clutch plates are relatively non-rotatably engaged with a clutch inner, and an end plate disposed so that the clutch plates and the clutch disks are disposed between itself and a piston slidably fitted in the clutch outer is relatively non-rotatably and axially movably supported on the clutch outer in the manner of being restricted in movement toward one end side in the axial direction, to prevent the clutch inner from coming out of position at the time of assembling the clutch device into position, thereby to enhance workability in the assembling operation, and to prevent the clutch inner from generating a collision sound by colliding against other member than the component members of the clutch device when the clutch is disengaged.
摘要:
A transmission for a vehicle in which changing a shift position is achieved by sliding a shifter. In sliding the shifter to change the established condition of gear trains respectively corresponding to a plurality of shift positions, the transmission of power from an engine to a main shaft is cut off. A feed mechanism for sliding the shifter is configured to reduce the sliding speed of the shifter in a neutral condition, or to cause the sliding operation of the shifter to have a single stopping action in the neutral condition during the sliding operation of the shifter in changing the established condition of the gear trains. The resulting configuration reduces the engagement noise when changing the shift position.
摘要:
A transmission for a vehicle in which changing a shift position is achieved by sliding a shifter. In sliding the shifter to change the established condition of gear trains respectively corresponding to a plurality of shift positions, the transmission of power from an engine to a main shaft is cut off. A feed mechanism for sliding the shifter is configured to reduce the sliding speed of the shifter or to once stop the sliding operation of the shifter in a neutral condition during the sliding operation of the shifter in changing the established condition of the gear trains. The resulting configuration reduces the engagement noise when changing the shift position.
摘要:
A gear transmission permits an increased flexibility in the layout of shift gears and reduces the axial size of the transmission by providing an engaging portion on a specific one of the shift gears. The gear transmission includes a main shaft having drive gears, a countershaft having driven gears adapted to be respectively driven by the drive gears to set predetermined shift positions, and shifters engageable with specific gears of the drive gears and the driven gears. The specific gears respectively have engaging portions for engaging the shifters, whereby the main shaft rotationally drives the countershaft through any one of the shifters and any one of the specific gears at any one of the predetermined shift positions. Of the engaging portions, the outer diameter of the engaging portion is larger than the outer diameter of a toothed portion of the drive gear as one of the specific gears.
摘要:
A transmission M of a vehicular power transmission system has a first shifting part and a second shifting part which shift a power of an internal combustion engine, a first shift clutch transmitting and interrupting the power to the first shifting part, and a second shift clutch transmitting and interrupting the power to the second shifting part. A start clutch transmitting and interrupting the power to the first shift clutch and the second shift clutch is constructed of a centrifugal clutch C having a clutch shoe. The resulting configuration provides a vehicular power transmission system which has excellent efficiency of power transmission and durability, as well as being capable of being manufactured at low cost, and being capable of relieving a start shock.
摘要:
An automatic transmission assembly having a transmission unit including a plurality of gear pairs, a shift drum, a pair of clutches; and a controller. The controller performs a preliminary upshifting action in advance for angularly moving the shift drum depending on a next gear position in an upshifting direction while rotary drive power is being maintained at a given gear position, and when an upshifting command is output, the controller engages one of the clutches simultaneously with the command. When a downshifting command is output, the controller performs a preliminary downshifting action in advance based on the downshifting command. The partially neutral positions are provided between predetermined angular positions on the shift drum for temporarily reducing the angular speed of the shift drum when the shift drum is being angularly rotated.