Patent application number | Description | Published |
20120070317 | OIL PUMP UNIT WITH VARIABLE FLOW RATE - An oil pump unit with a variable flow rate includes: an oil pump having an intake port and a discharge port and accommodating a pump rotor; and an oil path switching valve having oil inlets and oil outlets and opening/closing oil pressure return holes communicating with the discharge port, in which the oil path switching valve and the oil pump are separately disposed, the intake port and the discharge port are open to valve-mounting surfaces formed at the oil pump, and oil inlets and the oil outlet are open to body-mounting surfaces matching with the valve-mounting surfaces of the oil path switching valve. | 03-22-2012 |
20120070318 | OIL PUMP UNIT WITH VARIABLE FLOW RATE - An oil pump unit with a variable flow rate includes lubrication pumps and a control pump that are driven by rotation of a crankshaft of an engine, and changes an oil supply amount from the control pump to each part of the engine, in which the control pump includes a plurality of oil pumps that have different discharge rates. | 03-22-2012 |
20120247254 | SHIFT ACTUATOR LAYOUT STRUCTURE IN VEHICLE - In a vehicle having a generator cover mounted on one side of a crankcase so as to cover an end portion of a crankshaft projecting from the crankcase and a shift spindle located on the rear side of the generator cover as an input member of a shifting mechanism, a shift actuator is located below the longitudinal range of the generator cover in parallel to the crankshaft and on the front side of the axis of the shift spindle. | 10-04-2012 |
20120247904 | INTERNAL COMBUSTION ENGINE AND SUPPLYING OIL PATH STRUCTURE FOR HYDRAULIC CLUTCH IN INTERNAL COMBUSTION ENGINE - An internal combustion engine is provided with a plurality of hydraulic clutches, a plurality of hydraulic controlling valves for individually controlling the oil pressure for the hydraulic clutches, and a plurality of clutch oil pressure sensors for individually detecting the controlling oil pressure of controlling oil supplying paths interconnecting the hydraulic controlling valves and the hydraulic clutches. The oil pressure sensors individually correspond to the hydraulic clutches compactly, thereby to preventing an increase in size. The clutch oil pressure sensors are provided on an engine main body so as to be disposed in the proximity of and in parallel to each other while axial directions thereof are directed in a forward and backward direction of a saddle type vehicle in a state in which the engine main body is mounted on the saddle type vehicle. | 10-04-2012 |
20130037372 | HYDRAULIC CLUTCH CONTROL DEVICE OF VEHICLE POWER UNIT - A hydraulic clutch control device of a vehicle power unit in which the oil pressure control valve is prevented from being exposed above the oil level even when a vehicle body inclines frontward or rearward. A housing chamber housing an actuator is formed in a housing chamber forming body attached to an engine main body and an oil pressure control valve partially facing the housing chamber is supported by the housing chamber forming body. An oil return hole used to return excess hydraulic oil from the housing chamber into the engine main body is provided in the housing chamber forming body to communicate with an upper portion of the housing chamber at an end portion of the housing chamber on a side close to the oil pressure control valve. | 02-14-2013 |
20140083228 | SHIFT DRUM STRUCTURE FOR DRUM-TYPE TRANSMISSION - A shift drum structure for a drum-type transmission in which a shift fork moving on a shift fork shaft in an axial direction while guided by a guide groove in response to a turn of a shift drum, changes speeds by sliding a shifter member on a transmission driving shaft pivotally supporting a transmission gear, the shift drum. The shift drum includes a cylindrical drum main body and drum spindles projecting outward from drum end walls on the respective two sides of the drum main body, and the guide groove formed in an outer peripheral surface of the drum main body in a circumferential direction, wherein in the shift drum, a work groove is formed in the outer peripheral surface of the drum main body from one end surface to an opposite end surface of the drum main body, or to the guide groove near the opposite end surface. | 03-27-2014 |
20140290408 | VIBRATION ISOLATING STRUCTURE FOR POWER UNIT - A vibration isolating structure for a power unit. The power unit includes an internal combustion engine equipped with transmissions. The vibration isolation structure includes torque dampers disposed between transmission gears of the transmission and a power transmission shaft supporting the transmission gears. | 10-02-2014 |
20140290431 | VEHICLE DRIVING FORCE TRANSMISSION STRUCTURE - The vehicle driving force transmission structure of a power unit can include a main transmission having a transmission shaft group and parallel to a crankshaft and provided in a crankcase on the side of the crankshaft. The transmission structure can also include a large rotational body provided at an end of the crankshaft, and an auxiliary transmission provided as a separate body from and connecting to the main transmission. The auxiliary transmission has a transmission shaft group parallel to the transmission shaft group of the main transmission and disposed so as to form a periphery of the large rotational body. The auxiliary transmission includes a transmission driving mechanism disposed below the large rotational body. | 10-02-2014 |
20140291106 | CLUTCH CONTROL DEVICE IN POWER UNIT FOR VEHICLE - A solenoid body is attached to an outer surface side of a clutch cover attached to an engine main body so as to cover a pair of hydraulic clutches. A hydraulic control solenoid valve for controlling pressure of a hydraulic oil from an oil pump, a single switching valve for alternatively selecting hydraulic chambers of the pair of hydraulic clutches to be supplied with the hydraulic oil from the hydraulic control solenoid valve, and a shift solenoid valve for controlling operation of the switching valve are attached to the solenoid body. | 10-02-2014 |
20140291109 | PARKING BRAKE SYSTEM FOR VEHICLE - The vehicle can include a power transmission system for transmitting power of an internal combustion engine to drive wheels through transmissions and a parking brake system for restraining rotation of the drive wheels by engaging with a part of the power transmission system. The parking brake system for the vehicle can also include a parking drive mechanism which operates a restraining member, by turning of an input shaft of a shift drive mechanism for changing the shift position in the transmission, so as to restrain rotation of transmission gear shafts, and thereby establish a parking brake state. In the parking brake system, a shift cable connected to the input shaft is connected to a parking operation lever. | 10-02-2014 |
20140296030 | POWER UNIT FOR VEHICLE - A transmission partly overlapping clutches as viewed from an axial direction of a crankshaft is disposed below an inclined cylinder axis of an engine main body. A speed change actuator is disposed in a position such that the transmission is interposed between the speed change actuator and the crankshaft. An exhaust pipe connected to a lower side wall of a cylinder head is extended so as to pass above the transmission and partly overlap an upper portion of the speed change actuator as viewed from the axial direction of the crankshaft. | 10-02-2014 |
20140296031 | POWER UNIT FOR VEHICLE AND FOUR-WHEELED VEHICLE - A clutch actuator and a speed change actuator are disposed so as to be adjacent to each other on one side of an engine main body along the axis of a crankshaft. The clutch actuator is provided with a manual clutch operating part capable of being manually operated. The speed change actuator is provided with a manual speed change operating part capable of being manually operated. | 10-02-2014 |