WO2022059664A1 - リーン車両 - Google Patents
リーン車両 Download PDFInfo
- Publication number
- WO2022059664A1 WO2022059664A1 PCT/JP2021/033685 JP2021033685W WO2022059664A1 WO 2022059664 A1 WO2022059664 A1 WO 2022059664A1 JP 2021033685 W JP2021033685 W JP 2021033685W WO 2022059664 A1 WO2022059664 A1 WO 2022059664A1
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- WIPO (PCT)
- Prior art keywords
- speed
- engine
- lean vehicle
- actuator
- acceleration instruction
- Prior art date
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Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M7/00—Motorcycles characterised by position of motor or engine
- B62M7/02—Motorcycles characterised by position of motor or engine with engine between front and rear wheels
- B62M7/04—Motorcycles characterised by position of motor or engine with engine between front and rear wheels below the frame
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62J—CYCLE SADDLES OR SEATS; AUXILIARY DEVICES OR ACCESSORIES SPECIALLY ADAPTED TO CYCLES AND NOT OTHERWISE PROVIDED FOR, e.g. ARTICLE CARRIERS OR CYCLE PROTECTORS
- B62J45/00—Electrical equipment arrangements specially adapted for use as accessories on cycles, not otherwise provided for
- B62J45/20—Cycle computers as cycle accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/06—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with spur gear wheels
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D31/00—Use of speed-sensing governors to control combustion engines, not otherwise provided for
- F02D31/001—Electric control of rotation speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0215—Introducing corrections for particular conditions exterior to the engine in relation with elements of the transmission
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/021—Introducing corrections for particular conditions exterior to the engine
- F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/04—Smoothing ratio shift
- F16H61/0437—Smoothing ratio shift by using electrical signals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/50—Signals to an engine or motor
- F16H63/502—Signals to an engine or motor for smoothing gear shifts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2200/00—Type of vehicle
- B60Y2200/10—Road Vehicles
- B60Y2200/12—Motorcycles, Trikes; Quads; Scooters
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/50—Input parameters for engine control said parameters being related to the vehicle or its components
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
Definitions
- the present invention relates to a lean vehicle.
- Patent Document 1 shows a motorcycle as an example of a lean vehicle.
- the motorcycle of Patent Document 1 includes an engine, a transmission, and a clutch.
- the transmission in Patent Document 1 is an actuator-driven sequential multi-speed transmission in which the gear stage increases or decreases each time a shift operation is performed by driving the actuator.
- Patent Document 2 shows a motorcycle as an example of a lean vehicle.
- the motorcycle of Patent Document 2 includes a body frame and a power unit.
- the power unit is equipped with an engine.
- a power unit is attached to the body frame.
- an elastic mount is adopted for mounting, and vibration transmitted from the power unit to the driver's limbs via the vehicle body and noise generated from the vehicle body due to the vibration are reduced.
- the rotational speed of the engine increases as the traveling speed increases.
- the rotation speed of the engine is generally higher than in the case of traveling at a low speed.
- the noise generated as the running speed increases also increases.
- Lean vehicles do not have an engine room like a car, nor a cabin to accommodate a driver. That is, the engine unit of a lean vehicle is usually exposed to the outside of the vehicle body. The engine of the lean vehicle is attached to the frame of the vehicle body. Therefore, the influence of the sound and vibration generated from the engine unit and the vehicle body on the driver is greater.
- An object of the present invention is to reduce the noise and vibration of a lean vehicle having an actuator-driven sequential multi-speed transmission.
- Japanese Patent Application Laid-Open No. 2015-58783 describes coastal running of a truck that is not a lean vehicle.
- the clutch is disengaged and the fuel of the engine is cut by driving the clutch actuator.
- the transmission is put into the neutral state and the clutch is put into the engaged state by driving the shift actuator.
- the clutch returns to the connected state, the power supply to the clutch actuator can be stopped.
- the clutch is disengaged and the gear stage of the transmission is returned from the neutral state. After this, the engine starts operating and the clutch is engaged again.
- the actuator-driven sequential multi-speed transmission of a lean vehicle is different in structure and operation from the transmission of a truck or the like.
- a gear stage belonging to a high-speed stage group cannot be changed to neutral by a single shift operation.
- the shift operation includes, for example, the operation of the motor, the operation of the shift cam mechanism, the disengagement of the dog gear, the movement of the dog gear, and the re-engagement.
- the shift operation noise and vibration are generated from the transmission.
- the transmission is usually provided in an engine unit exposed to the outside of the vehicle body. Therefore, the shift operation sound generated from the transmission of the lean vehicle is heard by the driver with a louder sound than, for example, in the case of an automobile. Furthermore, during the shift operation, the engine is in an operation stopped state or an idling state in order to reduce the sound of the engine. Therefore, the shift operation noise and vibration generated from the transmission are remarkably recognized. When the shift operation is performed 6 times, the shift operation sound is generated 6 times. As described above, each shift operation includes the operation of the shift cam mechanism, the disengagement of the dog gear, the movement, and the re-engagement, which are sequentially performed.
- the present inventor has studied to reduce the noise and vibration caused by the actuator-driven sequential multi-speed transmission. As a result of the study, the present inventor has found that sound and vibration can be reduced by not intentionally setting the state of the actuator-driven sequential multi-speed transmission to the neutral state. For example, when a non-acceleration instruction based on a driver's operation is output while traveling in a gear stage belonging to a high-speed stage group, the friction clutch is driven by the clutch actuator to be in a disengaged state, and the disengaged state continues. As a result, high-speed inertial force running continues even if the actuator-driven sequential multi-speed transmission is not in the neutral state.
- the gear stage is maintained in the high-speed stage group by high-speed inertial force running, for example, the gear stage is adjusted in advance so that re-acceleration becomes easy when the clutch is engaged after high-speed inertial force running. Even in such a case, the number of shift operations is limited. Therefore, the number of times and the period during which the shift operation sound is generated are shortened. That is, the shift operation noise and vibration are suppressed.
- the inertial force running of the lean vehicle that does not stand on its own while stopped is utilized by utilizing the self-steering characteristics of the lean vehicle and the straightness during running. It can be easier to continue.
- the driver is also exposed to the running wind. That is, the lean vehicle during traveling is subject to the air resistance of both the vehicle body and the driver. The speed of a lean vehicle in inertial force driving tends to decrease.
- the clutch When the non-acceleration instruction is output, the clutch is disengaged to enter the high-speed inertial force running state, so that the noise generated from the engine is reduced, and the gear stage in this high-speed inertial force running state is maintained in the high-speed stage group. By doing so, the shift operation noise and vibration caused by the shift operation of the sequential transmission are reduced. Therefore, the noise and vibration during traveling of the lean vehicle having the actuator-driven sequential multi-speed transmission are reduced.
- the lean vehicle has the following configuration. It was
- the lean vehicle is, for example, a saddle-mounted vehicle configured to be able to turn in a lean posture.
- a saddle-mounted vehicle configured to be able to turn in a lean posture turns, for example, in a posture tilted inward in a curve.
- the lean vehicle can counter the centrifugal force applied to the saddle-mounted vehicle when turning.
- a saddle-type vehicle is a vehicle in which the driver sits across the saddle. Examples of lean vehicles include scooter type, moped type, off-road type, and on-road type motorcycles.
- the lean vehicle is not limited to the motorcycle, and may be, for example, a motorcycle.
- the tricycle may have two front wheels and one rear wheel, or may have one front wheel and two rear wheels.
- the drive wheels of the lean vehicle may be rear wheels or front wheels.
- the lean vehicle includes a frame, a handlebar, a step, an engine, an actuator-driven sequential multi-speed transmission, an actuator-driven clutch, an acceleration indicator, and a control device.
- the frame is a component that supports the load applied to the entire lean vehicle.
- the frame supports the load received from the wheels, for example via a fork and a swing arm.
- the frame is, for example, a main frame to which a fork and a swing arm are attached.
- the frame is not particularly limited, and may include, for example, an air cleaner or a fuel tank having a function of supporting a load applied to the entire lean vehicle.
- the handlebar is a steering wheel.
- the handlebars are attached to the frame, for example by being fixed to a fork rotatably supported by the frame.
- the step is a part on which the driver's foot rests.
- the steps are attached directly to the frame, for example.
- the step is not particularly limited, and may be indirectly attached, for example, via
- the engine is an internal combustion engine.
- the engine of a lean vehicle is mounted on the frame so that at least part of it is exposed to the outside of the lean vehicle.
- the engine is attached to the frame, for example, via an elastic mount.
- the engine is not particularly limited and may be mounted directly on the frame, for example.
- the engine is equipped with a crankshaft.
- the rotational speed of the engine is, more specifically, the rotational speed of the crankshaft.
- the acceleration instruction unit outputs an acceleration instruction or a non-acceleration instruction to the lean vehicle.
- the acceleration instruction unit outputs, for example, an acceleration instruction as an electric signal.
- the acceleration indicator is, for example, an accelerator grip attached to the handlebar.
- the acceleration instruction unit outputs an acceleration instruction by being operated by the driver.
- the acceleration instruction unit outputs a non-acceleration instruction when there is no acceleration operation.
- the acceleration indicator may be considered to output a non-acceleration instruction if it does not output an acceleration instruction.
- the control device may compare the signal output from the acceleration instruction unit with the reference, and determine whether the non-acceleration instruction is output or the acceleration instruction is output according to the comparison result. For example, when the level of the signal output according to the operation position of the acceleration instruction unit is less than the reference level, it may be determined that the acceleration instruction unit outputs the non-acceleration instruction.
- the non-acceleration instruction may be further divided into, for example, a deceleration instruction and an inertial running instruction.
- the acceleration instruction unit selectively outputs an acceleration instruction, an inertial running instruction, and a deceleration instruction.
- the deceleration instruction is an instruction for performing a deceleration larger than the inertial running instruction.
- the deceleration instruction is an instruction for decelerating by the action of the engine brake, for example.
- the operable range of the acceleration instruction unit is divided into three, the range of the smallest operation amount including the position when the operation is not performed corresponds to the deceleration instruction.
- the range of the largest amount of operation corresponds to the acceleration instruction.
- the middle range corresponds to the inertial running instruction.
- the control device may compare the signal output from the acceleration instruction unit with the reference and determine whether the deceleration instruction is output or the inertial running instruction is output. In this case, for example, the control device compares the signal output from the acceleration instruction unit with a plurality of references, and determines whether the deceleration instruction is output, the inertial running instruction is output, or the acceleration instruction is output. ..
- the output form of the acceleration instruction unit is not particularly limited, and for example, the non-acceleration instruction may not be distinguished into a deceleration instruction and an inertial running instruction.
- the instruction for maintaining the vehicle speed in a situation where the lean vehicle decelerates if there is no engine output corresponds to an acceleration instruction. Also, when descending a slope, the lean vehicle accelerates even if there is no engine output. At this time, the acceleration instruction is not output. This is synonymous with the fact that a non-acceleration instruction is output.
- the form of the acceleration instruction unit is not particularly limited, and may be, for example, a cruise control control unit having a control function for accelerating the lean vehicle to a target speed.
- the cruise control control unit can usually maintain the vehicle speed even if the cruise control control unit outputs an acceleration instruction to maintain the vehicle speed in the acceleration instruction output state (X) or the cruise control control unit does not output the acceleration instruction. It becomes one of the acceleration instruction non-output states (Y).
- the cruise control control unit outputs a non-acceleration instruction in the state (Y).
- the cruise control control unit is normally in the state (X) when traveling on a flat road or climbing a slope. When descending a slope, the cruise control control unit is in either a state (X) or a state (Y) depending on the inclination angle of the slope or the like.
- the actuator-driven sequential multi-speed transmission includes a sequential transmission and a shift actuator.
- the sequential transmission one state is selected at a certain timing.
- the gear ratio is set according to the gear stage.
- the rotational speed output from the engine is changed by one selected gear ratio and transmitted to the drive wheels.
- the sequential transmission has a multi-stage gear stage belonging to a high-speed stage group or a low-speed stage group.
- the sequential transmission also has a neutral state.
- the sequential transmission has a neutral state and a plurality of non-neutral states.
- the non-neutral state includes a high speed stage group and a low speed stage group.
- the high-speed stage group belongs to more than half of all gear stages in the non-neutral state.
- the high-speed speed group is 8 to 5 speeds when the sequential transmission is an 8-speed type, 7 to 4 speeds when the sequential transmission is a 7-speed type, and 6 in the case of a 6-speed type.
- the low speed stage group belongs to the rest of the high speed stage group in the non-neutral state.
- the number of gears is increased or decreased by one for each shift operation. For example, from the neutral state, the states are selected in the order of 1st speed, 2nd speed, 3rd speed, 4th speed, and so on.
- the states are selected in the order of 4th speed, 3rd speed, 2nd speed, 1st speed, and neutral state. That is, for example, the 1st gear is not selected after the 3rd gear, and the neutral state is not selected after the 3rd gear.
- the sequential transmission for example, a configuration in which the first speed is arranged between the neutral state and the second speed in the operation order can be adopted.
- the sequential transmission is not particularly limited, and may be configured such that a neutral state is arranged between the first speed and the second speed.
- the sequential transmission may be controlled so that the number of shift operations during high-speed inertial force traveling is a predetermined number or less. The predetermined number of times may be set to any one of 1, 2 or 3 times.
- the shift actuator drives a sequential transmission to shift.
- the sequential transmission is driven by a shift actuator to select a gear stage.
- the shift actuator is, for example, an electric motor.
- the shift actuator is not particularly limited, and may be, for example, a solenoid or a hydraulic actuator.
- the actuator driven clutch includes a friction clutch and a clutch actuator.
- the friction clutch is a power transmission device provided in the power transmission path between the engine and the drive wheels.
- the friction clutch has a connected or disconnected state. For example, a state in which a part of the driving force is not substantially transmitted, that is, a so-called half-clutch state is included in the disengaged state.
- the friction clutch transmits power by, for example, the frictional force of a plate-shaped member provided on each of an input shaft and an output shaft.
- the friction clutch does not include, for example, a centrifugal clutch. Also, the friction clutch does not include a torque converter that transfers power through the fluid. Therefore, the lean vehicle has high responsiveness to the acceleration operation.
- the friction clutch is driven by a clutch actuator.
- the clutch actuator is, for example, an electric motor.
- the clutch actuator is not particularly limited, and may be, for example, a solenoid or a hydraulic actuator.
- the control device controls an actuator-driven sequential multi-speed transmission, an actuator-driven clutch, and an engine.
- the gear stage of the sequential transmission belongs to the high-speed stage group and the lean vehicle is in a running state and a non-acceleration instruction is output by the acceleration instruction unit
- the control device is attached to the clutch actuator so as to perform high-speed inertial force running. Put the clutch in the disengaged state.
- High-speed inertial force running is running that does not use the power of the engine.
- the lean vehicle 1 basically travels by utilizing the inertia of the lean vehicle itself. In high-speed inertial force running, there is no acceleration or deceleration by the power of the engine 20.
- high-speed inertial force running in lean vehicles is not aimed at maintaining speed.
- the speed of a lean vehicle during high-speed inertial force driving usually decreases gradually.
- the driver is also exposed to the traveling wind in addition to the vehicle body. Therefore, in addition to the frictional resistance and the air resistance of the vehicle body, the air resistance of the driver acts on the lean vehicle.
- the speed of a lean vehicle during high-speed inertial force driving tends to decrease more than in the case of an automobile.
- the control device In high-speed inertial force running, the control device causes the clutch actuator to disengage the clutch and puts the engine in an idling operation state or a stop state.
- the control device causes the shift actuator to maintain the gear stage of the sequential transmission in the high-speed stage group during the period of high-speed inertial force running.
- the control device may continue to maintain the gear stages of the sequential transmission in the high speed stage group even after the high speed inertial force running is completed.
- the control device is not particularly limited, and the gear stage of the sequential transmission may be changed to the low speed stage group after the high-speed inertial force running is completed.
- the portion that controls the actuator-driven sequential multi-speed transmission and the actuator-driven clutch and the portion that controls the engine may be composed of, for example, physically different devices.
- control device is composed of, for example, a memory for storing a program and a processor for executing the program.
- the control device is not particularly limited, and may be composed of, for example, a logic circuit that does not include a program.
- High-speed inertial driving is performed by the driver gripping the handlebar and manipulating the vehicle with his foot on the step while the friction clutch is disengaged and the engine is idling or stopped. It is running.
- the high-speed inertial force running is executed on the condition that (A) the gear stage of the sequential transmission belongs to the high-speed stage group and (B) the non-acceleration instruction is output by the acceleration instruction unit.
- other conditions may be set as the start conditions for high-speed inertial force running. In this case, the high-speed inertial force running is not started when only the start conditions (A) and (B) are satisfied, and the high-speed inertial force running is started when the other conditions are also satisfied.
- High-speed inertial force running starts when the friction clutch is disengaged by the clutch actuator.
- the high-speed inertial force running may be executed on condition that the inertial running instruction of the non-acceleration instruction is further output. That is, among the non-acceleration instructions, when the deceleration instruction is output, the high-speed inertial force running may be suspended. When high speed inertial running is suspended, the friction clutch remains engaged and the engine brake is activated.
- the high-speed inertial force running ends, for example, on condition that the acceleration instruction is output by the acceleration instruction unit.
- the end condition of the high-speed inertial force running is not limited to this, and for example, the speed of the lean vehicle may be lower than the lower limit speed that can be handled by the gear stage of the high-speed stage group.
- high-speed inertial force running is subject to the logical sum of, for example, whether the acceleration instruction is output by the acceleration instruction unit or the speed of the lean vehicle is lower than the lower limit speed that can be handled by the gear stage of the high-speed stage group. , May be finished.
- High-speed inertial force running ends when the friction clutch is engaged.
- the lower limit speed may be set so as to be included in the range of 30 km / h or more and 50 km / h or less.
- the lower limit speed is, for example, 30 km / h, it is easy to cope with acceleration by the engine at the end of high-speed inertial force running while continuing the gear stage of the high-speed inertial force running in high-speed inertial force running.
- the lower limit speed is, for example, 40 km / h, it is possible to facilitate high-speed inertial force running by utilizing the inertia of the lean vehicle itself.
- the lower limit speed is, for example, 50 km / h
- the high-speed inertial force running may be terminated on condition that an acceleration instruction or a deceleration instruction is output by the acceleration instruction unit.
- the condition is that the acceleration instruction is output by the acceleration instruction unit, the deceleration instruction is output, or the speed of the lean vehicle is lower than the lower limit speed. You may finish. In this case, the engine brake can be used even if the gear stage belongs to the high gear stage group.
- the friction clutch is driven by the clutch actuator to be in the disengaged state, and the disengaged state is continued. ..
- high-speed inertial force running continues even if the actuator-driven sequential multi-speed transmission is not changed to the neutral state. Therefore, even if the shift operation is not executed so that the gear stage changes from the high speed stage group to, for example, neutral, the high speed inertial force running continues.
- the shift operation is maintained by maintaining the high-speed stage group.
- the number of times is limited. Therefore, the number and duration of shift operation noise and vibration are shortened. Therefore, the shift operation noise and vibration are suppressed.
- the noise and vibration generated from the engine are reduced, and further, the gear stage in this high-speed inertial force running state is maintained in the high-speed stage group, so that the shift operation sound and the shift operation sound caused by the shift operation of the sequential transmission are generated. Vibration is reduced. Therefore, the noise and vibration during traveling of the lean vehicle having the actuator-driven sequential multi-speed transmission are reduced.
- the lean vehicle can adopt the following configuration.
- the control device puts the engine into an operating state in response to the acceleration instruction and puts the friction clutch on the clutch actuator. Change to the connected state.
- increasing the rotation speed of the engine to the speed corresponding to the re-acceleration is to put the engine into an operating state according to the acceleration instruction.
- starting the combustion operation when the engine is stopped is also to make the operation state according to the acceleration instruction.
- the operating state of the engine in response to the acceleration instruction can be determined within a practically acceptable range for a lean vehicle.
- the rotation speed of the engine according to the re-acceleration can be determined within a range practically acceptable for a lean vehicle.
- the acceleration instruction unit when the acceleration instruction unit outputs an acceleration instruction, the engine is put into an operating state according to the acceleration instruction, and the friction clutch is put into a connected state by the clutch actuator. Therefore, high-speed inertial force running with reduced noise and vibration can be completed and re-accelerated by a simple operation without clutch operation.
- the lean vehicle can adopt the following configuration.
- (3) The lean vehicle of (2) The lean vehicle is When the acceleration instruction is output from the acceleration instruction unit, the control device causes the shift actuator to make the sequential transmission into a gear stage corresponding to the acceleration instruction in the high-speed stage group, and then the control device.
- the clutch actuator is made to change the friction clutch to the connected state, and the engine is put into the operating state in response to the acceleration instruction.
- the state of the sequential transmission is changed by driving the shift actuator.
- the transmission becomes the gear stage corresponding to the acceleration instruction in the high-speed stage group. Therefore, it is possible to reduce the fluctuation of the speed of the lean vehicle when the friction clutch is connected when the high-speed inertial force running with reduced noise and vibration is terminated in response to the acceleration instruction.
- the gear stage corresponding to the acceleration instruction can be determined from the high-speed stage group within a range practically acceptable as a lean vehicle.
- the lean vehicle can adopt the following configuration.
- Lean vehicle of (2) or (3) The lean vehicle is It is connected to the crankshaft so as to rotate at a fixed speed ratio with respect to the crankshaft of the engine, drives the crankshaft when the engine is started, and is driven by the engine during the combustion operation of the engine to generate power. Equipped with a generator The control device causes the starting generator to drive the crankshaft prior to causing the clutch actuator to change the friction clutch to the connected state.
- the start generator is a rotary electric machine that can both start and drive the engine.
- the starting generator is, for example, a permanent magnet type motor.
- the fact that the starting generator is connected to the crankshaft so as to rotate at a fixed speed ratio with the crankshaft means that there is no power disconnecting means such as a friction clutch or a gear ratio converting means between the starting generator and the crankshaft. Is.
- the starting generator is connected to the crankshaft so that it rotates at a fixed speed ratio to the crankshaft. That is, the starting generator is connected to the engine without the intervention of a friction clutch or variable transmission. According to the lean vehicle of (4), the starting generator drives the crankshaft before the friction clutch is in the connected state. Therefore, after the engine has stopped operating or is in an idling state, the rotational speed of the crankshaft when the friction clutch is connected increases. While the noise and vibration generated during high-speed inertial force running are reduced, the fluctuation in the speed of the lean vehicle when the friction clutch is connected is reduced.
- the lean vehicle can adopt the following configuration.
- the control device is attached to the handle resonance speed band of the engine and the frame where the rotation speed of the engine during the period of high-speed inertial force travel corresponds to the resonance frequency band of the handle bar attached to the frame.
- the engine is controlled so as to avoid the step resonance speed band of the engine corresponding to the resonance vibration frequency band of the step.
- the resonance frequency band of the handlebar is a frequency band having a large amplitude when the handlebar attached to the frame vibrates by receiving an external force.
- the handle resonance speed band is the rotation speed band of the engine corresponding to the resonance frequency band of the handlebar.
- the resonance frequency band of the step is a frequency band having a large amplitude when the step attached to the frame vibrates by receiving an external force.
- the step resonance speed band is the rotation speed band of the engine corresponding to the resonance frequency band of the step.
- the lean vehicle can adopt the following configuration.
- the lean vehicle has a catalyst for purifying the exhaust gas of the engine and includes an exhaust gas purifying device connected to the engine.
- the control device is such that the rotation speed of the engine during the period of high-speed inertial force running becomes a rotation speed at which the temperature of the catalyst is made higher than the lower limit of activity temperature of the catalyst by the exhaust gas from the engine.
- the exhaust gas purification device is, for example, a device that purifies the exhaust gas of an engine that uses gasoline as fuel.
- the exhaust gas purification device has a catalyst.
- the catalyst promotes the chemical reaction of harmful components contained in the exhaust gas to make them harmless. This purifies the exhaust gas.
- the catalyst tends to exert a function of purifying exhaust gas at a temperature higher than the lower limit of activity.
- the engine operates at a rotation speed such that the temperature of the catalyst is higher than the lower limit temperature of the activity of the catalyst under the control of the control device during the period of high-speed inertial force running.
- the exhaust gas purifying device When the high-speed inertial force running is completed in response to the acceleration instruction, the exhaust gas purifying device is in a state where the exhaust gas of the engine can be purified before the engine starts the operation for acceleration. Therefore, it is possible to reduce the noise and vibration generated during the high-speed inertial force running while enabling the purification of the exhaust gas after the high-speed inertial force running is completed.
- the technical terms used herein are for the purpose of defining only specific embodiments and have no intention of limiting the invention.
- the term “and / or” includes any or all combinations of one or more related listed components.
- the use of the terms “include, include”, “include, comprising” or “having” and variations thereof are described in the features, processes, operations, described. It identifies the presence of elements, components and / or their equivalents, but can include one or more of steps, actions, elements, components, and / or groups thereof.
- the terms “attached”, “connected”, “combined” and / or their equivalents are widely used, direct and indirect attachment, connection and Includes both bonds.
- FIG. 3 is an enlarged cross-sectional view showing the engine shown in FIG. 4 and the devices around the engine. It is a time chart explaining the operation of the lean vehicle in the 2nd Embodiment. It is a time chart explaining the operation of the lean vehicle in 3rd Embodiment.
- FIG. 1 is a diagram illustrating a lean vehicle according to the first embodiment of the present invention.
- Part (a) of FIG. 1 is a diagram showing a schematic configuration of a lean vehicle.
- Part (b) of FIG. 1 is a time chart showing the operation of a lean vehicle.
- the lean vehicle 1 shown in FIG. 1 is controlled by a frame 2, a handlebar 3, a step 4, an engine 20, an actuator-driven sequential multi-speed transmission 40, an actuator-driven clutch 50, and an acceleration indicator 131.
- the device 80 is provided. Further, the lean vehicle 1 includes a fork 5 and a drive wheel 15.
- the frame 2 supports the load applied to the entire lean vehicle 1.
- the handlebar 3 is attached to the frame 2.
- the handlebar 3 is gripped by the driver of the lean vehicle 1.
- the handlebar 3 is a steering wheel for steering.
- the handlebar 3 is fixed to a fork 5 rotatably supported by the frame 2. As a result, the handlebar 3 is attached to the frame 2.
- Step 4 is a part on which the driver's foot is placed. Step 4 is attached to the frame 2. Step 4 may be attached to the frame 2 via, for example, an attachment member. However, the step 4 is attached to the frame 2 so that the position of the step 4 is fixed to the frame 2.
- the engine 20 is attached to the frame 2 so that at least a part thereof is exposed to the outside of the lean vehicle 1.
- the engine 20 is attached to the frame 2 by, for example, a rubber mount.
- the type of the fixture of the engine 20 is not particularly limited.
- the actuator-driven sequential multi-speed transmission 40 includes a sequential transmission 42 and a shift actuator 41.
- the sequential transmission 42 has a multi-stage gear stage belonging to a high-speed stage group or a low-speed stage group.
- the sequential transmission 42 further has a neutral state.
- the high-speed stage group corresponds to half of the gear stages corresponding to high speed.
- the low speed gear group corresponds to the remaining gear gears.
- the sequential transmission 42 increases or decreases gears by one for each shift operation. That is, the gear stages are sequentially selected. For example, it is not possible to select 4th gear without selecting 3rd gear after 2nd gear.
- the rotation speed output from the engine 20 is converted by the gear ratio corresponding to each gear stage.
- the rotational speed output from the engine 20 is converted at a gear ratio corresponding to the selected gear stage and transmitted to the drive wheels 15.
- the sequential transmission 42 in the neutral state does not transmit the rotational speed output from the engine 20 to the drive wheels 15.
- the sequential transmission 42 when the sequential transmission 42 is an 8-speed type, the sequential transmission 42 has eight gear stages from 1st gear to 8th gear and a neutral state.
- the high-speed stage group is half of the eight gear stages from the 1st speed to the 8th speed corresponding to the high speed. That is, the gear stages from the 8th speed to the 5th speed belong to the high speed stage group.
- the gear stages from the 4th speed to the 1st speed belong to the low speed stage group.
- the sequential transmission 42 when the sequential transmission 42 is a 7-speed type, the sequential transmission 42 has 7 gears from 1st gear to 7th gear and a neutral state.
- the high-speed stage group is half of the seven gear stages from the 1st speed to the 7th speed, which corresponds to the high speed.
- the gear stages from the 7th speed to the 4th speed belong to the high speed stage group.
- the gear stages from the 3rd speed to the 1st speed belong to the low speed stage group.
- the sequential transmission 42 is a 6-speed type
- the sequential transmission 42 has 6 gear stages from 1st gear to 6th gear and a neutral state.
- the high-speed stage group is half of the six gear stages from the first speed to the sixth speed, which corresponds to the high speed. That is, the gear stages from the 6th speed to the 4th speed belong to the high speed stage group.
- the gear stages from the 3rd speed to the 1st speed belong to the low speed stage group.
- the sequential transmission 42 when the sequential transmission 42 is a 5-speed type, the sequential transmission 42 has five gear stages from 1st gear to 5th gear and a neutral state.
- the high-speed stage group is half of the five gear stages from the first speed to the fifth speed, which corresponds to the high speed. That is, the gear stages from the 5th speed to the 3rd speed belong to the high speed stage group.
- the gear stages from the 2nd speed to the 1st speed belong to the low speed stage group.
- the sequential transmission 42 when the sequential transmission 42 is a four-speed type, the sequential transmission 42 has four gear stages from the first speed to the fourth speed and a neutral state.
- the high-speed stage group is half of the four gear stages from the first speed to the fourth speed, which corresponds to the high speed. That is, the gear stages from the 4th speed to the 3rd speed belong to the high speed stage group.
- the gear stages from the 2nd speed to the 1st speed belong to the low speed stage group.
- the shift actuator 41 drives the sequential transmission 42. As a result, the sequential transmission 42 shifts.
- the sequential transmission 42 is driven by the shift actuator 41 to select a gear stage.
- the shift actuator 41 has, for example, an electric motor.
- the actuator drive type clutch 50 has a friction clutch 52 and a clutch actuator 51.
- the friction clutch 52 is provided in the power transmission path 60 between the engine 20 and the sequential transmission 42.
- the friction clutch 52 switches the power transmission path 60 into a connected state or a disconnected state.
- a state in which a part of the driving force of the engine 20 is not substantially transmitted to the sequential transmission 42 is a disconnected state. That is, the so-called half-clutch state is included in the disengaged state.
- the clutch actuator 51 drives the friction clutch 52.
- the clutch actuator 51 has, for example, an electric motor.
- the acceleration instruction unit 131 outputs an acceleration instruction or a non-acceleration instruction.
- the acceleration instruction represents a request for acceleration running of the lean vehicle 1 by the driver.
- the non-acceleration instruction indicates that the driver does not request the lean vehicle 1 to accelerate.
- the acceleration instruction unit 131 outputs a signal indicating a non-acceleration instruction.
- an electric signal is output from a sensor provided in the acceleration indicator 131.
- the acceleration indicator 131 is an accelerator grip attached to the handlebar 3.
- the acceleration instruction unit 131 outputs an acceleration instruction by being operated by the driver.
- an acceleration instruction is output and the opening degree of a throttle valve (not shown) provided in the engine 20 is controlled.
- the opening degree of the throttle valve is increased by a motor (not shown) controlled by the control device 80.
- the throttle valve does not have a motor, and may be connected to the accelerator grip as an acceleration indicator 131 by a mechanical wire, and the opening degree may change depending on the operating force of the accelerator grip.
- the acceleration instruction unit 131 outputs a non-acceleration instruction when there is no operation of the acceleration instruction.
- the acceleration instruction unit 131 outputs a non-acceleration instruction and an acceleration instruction according to the amount of operation.
- the acceleration instruction unit 131 outputs the acceleration instruction.
- the signal level is less than the reference level, it can be considered that the acceleration instruction unit 131 outputs the non-acceleration instruction.
- An operation for accelerating the lean vehicle 1 and an operation for reducing vibration during non-acceleration can be performed by operating one operating means.
- the acceleration instruction unit 131 a configuration that outputs a non-acceleration instruction separately for an inertial running instruction and a deceleration instruction can be adopted.
- the acceleration instruction unit 131 outputs a deceleration instruction, an inertial running instruction, and an acceleration instruction according to the amount of operation.
- the acceleration indicator 131 when the level of the signal output according to the amount of operation of the acceleration indicator 131 is less than the first reference level, the acceleration indicator 131 outputs a deceleration instruction and the signal level is equal to or higher than the first reference level.
- the inertial running instruction is output and the acceleration running instruction is output when the signal level is equal to or higher than the second reference level.
- the lean vehicle 1 does not have an engine room such as an automobile, nor a cabin for accommodating a driver.
- the engine 20 of the lean vehicle 1 includes an engine case (for example, reference numeral 21 in FIG. 5), and an actuator-driven sequential multi-speed transmission 40 is also provided in the engine case 21.
- the engine 20 (engine case 21) is usually exposed to the outside of the vehicle body. Further, the engine 20 (engine case 21) of the lean vehicle 1 is attached to the frame 2 of the vehicle body. Therefore, the vibration generated from the engine 20 and the sequential transmission 42 in the lean vehicle 1 is easily transmitted by the frame 2. Therefore, in the lean vehicle 1, the sound and vibration generated from the engine 20 and the sequential transmission 42 have a greater influence on the driver.
- the lean vehicle 1 is also different in the arrangement of the engine from, for example, an automobile in which the engine can be stored in the engine room.
- the engine of a normal automobile is arranged at a position deviated from the center of gravity of the entire automobile in a plan view. Therefore, the vibration centered on the center of gravity is difficult to be transmitted as the vibration of the entire automobile including the steering wheel.
- the engine 20 of the lean vehicle 1 is arranged at a position overlapping the center of gravity of the entire lean vehicle 1 in a plan view. Therefore, it is difficult for the vibration of the engine 20 to escape from the frame 2. That is, the vibration of the engine 20 is easily transmitted to the entire lean vehicle 1 including the frame 2. Therefore, the vibration of the engine 20 attached to the frame 2 is transmitted to the driver's hands and feet via the handlebar 3 and the step 4. Further, for example, the ratio of the weight of the engine 20 to the weight of the entire lean vehicle 1 is larger than the ratio in a normal automobile. For example, the weight of the engine 20 is greater than or equal to the weight of the frame 2.
- the vibration of the engine 20 is easily transmitted to the handlebar 3 and the step 4 via the frame 2. Therefore, the vibration of the engine 20 attached to the frame 2 is transmitted to the driver's hands and feet via the handlebar 3 and the step 4. Further, for example, the distance from the engine 20 to the steering wheel 3 in the lean vehicle 1 is shorter than the distance from the engine of a normal automobile to the steering wheel. Further, the distance from the engine 20 to the step 4 in the lean vehicle 1 is shorter than, for example, the distance from the engine of a normal automobile to the floor surface of the vehicle interior. Therefore, the vibration of the engine 20 in the lean vehicle 1 is easily transmitted to the handlebar 3 and the step 4 via the frame 2.
- the control device 80 controls the actuator-driven sequential multi-speed transmission 40, the actuator-driven clutch 50, and the engine 20.
- the control device 80 controls the state of the friction clutch 52 by controlling the clutch actuator 51.
- the control device 80 controls the state of the sequential transmission 42 by controlling the shift actuator 41.
- the control device 80 controls the combustion operation of the engine 20 by controlling, for example, a spark plug provided in the engine 20.
- the control device 80 can also control the combustion operation of the engine 20 by controlling the opening degree of the throttle valve and the fuel supply amount described above.
- the control device 80 can also control the rotation speed of the engine 20 by controlling the start generator 30 (see FIG. 5).
- the control device 80 controls the gear stage of the sequential transmission 42 by controlling the shift actuator 41.
- the control device 80 of the present embodiment controls the gear stage according to the acceleration instruction of the acceleration instruction unit 131, the rotation speed of the engine 20, and the speed of the lean vehicle 1. For example, when an acceleration instruction is output, every time the rotation speed of the engine 20 reaches the switching reference speed, a shift-up is performed to increase the gear stage of the sequential transmission 42.
- the lean vehicle 1 includes a shift-up switch and a shift-down switch (not shown), and the control device 80 may change the gear stage according to the operation of the shift-up switch and the shift-down switch by the driver.
- control device 80 may change the gear stage according to the speed of the lean vehicle 1 only during the period of high-speed inertial force traveling. Further, the control device 80 may always change the gear stage according to the speed or the like of the lean vehicle 1 regardless of the switch. Further, the control device 80 may have only a function of changing the state of the friction clutch 52 without changing the gear stage.
- the control device 80 executes high-speed inertial force traveling when the gear stage of the sequential transmission 42 belongs to the high-speed stage group and the lean vehicle 1 is in a traveling state and a non-acceleration instruction is output by the acceleration instruction unit 131. ..
- the control device 80 does not execute high-speed inertial force traveling when the gear stage of the sequential transmission 42 belongs to the low-speed stage group.
- high-speed inertial force running the friction clutch 52 is disconnected by the clutch actuator 51, and the engine 20 is in the idling operation state or the stopped state.
- the high-speed inertial force running is executed by the driver grasping the handlebar 3 and putting his / her foot on step 4 to operate the lean vehicle 1.
- the high-speed inertial force running is executed in the normal running state of the lean vehicle 1.
- the rotation speed of the engine 20 decreases or becomes zero.
- the sound generated from the engine 20 can be reduced. Further, the vibration transmitted from the engine 20 to the handlebar 3 and the step 4 can be reduced.
- the control device 80 has an actuator-driven sequential multi-stage transmission 40, an actuator-driven clutch 50, and an engine so that the shift actuator 41 maintains the gear stage of the sequential transmission 42 in the high-speed stage group during the period of high-speed inertial force traveling. 20 is controlled.
- the chart of part (b) of FIG. 1 schematically shows an example of changes in the output of the acceleration indicator 131, the gear stage, the state of the friction clutch 52, the rotation speed of the engine 20, and the speed of the lean vehicle 1.
- the output of the acceleration instruction unit 131 is simplified into two values, an acceleration instruction and a non-acceleration instruction.
- the acceleration instruction can include, for example, the degree of acceleration.
- the number of the gear stage is attached to the line of the gear stage.
- As an example of the gear stage an example in the case of a 5-speed sequential transmission 42 is shown. In this case, the 5th to 3rd gears belong to the high speed stage group, and the 2nd to 1st gears belong to the low speed stage group.
- the speed of the lean vehicle 1 is higher than 0, indicating that the lean vehicle 1 is running.
- An acceleration instruction is output, and the rotation speed of the engine 20 is increasing with time.
- a non-acceleration instruction is output according to the driver's operation.
- the rotation speed of the engine 20 decreases.
- the fuel supply to the engine 20 is stopped.
- the shift stage at time t1 belongs to the low speed stage group instead of the high speed stage group. Therefore, the control device 80 does not execute high-speed inertial force running. That is, the connected state of the friction clutch 52 is maintained.
- the lean vehicle 1 is in a state in which the so-called engine brake is activated. As a result, the speed of the lean vehicle 1 decreases relatively rapidly from the time t1 to the time t2.
- the output of the non-acceleration instruction is stopped according to the operation of the driver, and the acceleration instruction is output.
- the rotation speed of the engine 20 increases.
- the control device 80 executes the shift-up according to the increase in the rotational speed of the engine 20.
- the gear stage changes to 3rd, 4th, and 5th.
- the speed of the lean vehicle 1 continues to increase until time t3.
- a non-acceleration instruction is output according to the operation of the driver.
- the gear stage of the sequential transmission 42 belongs to the high-speed stage group. Therefore, the control device 80 executes high-speed inertial force running. In high-speed inertial force running, the control device 80 causes the clutch actuator 51 to disengage the friction clutch 52. Further, the control device 80 puts the engine 20 in an idling operation state or a stop state. For example, the fuel supply to the engine 20 is stopped. The control device 80 causes the shift actuator 41 to maintain the gear stage of the sequential transmission 42 in the high-speed stage group during the period of high-speed inertial force traveling.
- the control device 80 causes the shift actuator 41 to maintain the gear stage of the sequential transmission 42 while the non-acceleration instruction is output from the acceleration instruction unit 131.
- the control device 80 puts the engine 20 into an operating state according to the acceleration instruction and controls the clutch actuator 51 to change the friction clutch 52 to the connected state.
- the control device 80 causes the shift actuator 41 to change the gear stage of the sequential transmission 42 to the gear stage corresponding to the acceleration instruction.
- the control device 80 causes the shift actuator 41 to change the gear stage of the sequential transmission 42 to a lower gear stage.
- the control device 80 changes the gear stage within the range of the high-speed stage group.
- control device 80 puts the engine 20 into an operating state according to the acceleration instruction, and causes the clutch actuator 51 to change the friction clutch 52 to the connected state.
- the friction clutch 52 is connected, the high-speed inertial force running is completed. Therefore, the gear stage is maintained in the high speed stage group at least during the period of high speed inertial force running.
- the broken line in the part (b) of FIG. 1 shows the operation of the comparative example.
- the sequential transmission 42 is in the neutral state (N) and the friction clutch 52 is in the connected state during the period of inertial force traveling. Since the transmission of the power output from the engine 20 is cut off during the inertial force running period, the inertial force running is possible while the engine 20 is idling or stopped. The noise and vibration generated by the engine 20 are reduced.
- the gear stage is not maintained in the high speed stage group. That is, in the comparative example, the gear stage in the sequential transmission 42 changes from the 5th speed to the 4th speed, the 3rd speed, the 2nd speed, and the 1st speed, and then changes to the neutral state.
- the shift operation is executed as many as five times.
- the sequential transmission 42 unlike a transmission such as a truck, cannot change the state of the fifth speed to the neutral state by one shift operation.
- the shift operation noise and vibration are generated from the transmission.
- the engine 20 is in an operation stopped state or an idling state in order to reduce noise and vibration. Therefore, the shift operation noise and vibration generated from the transmission are remarkably recognized.
- the shift operation sound is generated five times.
- the friction clutch 52 is in the disengaged state before the inertial force running is completed, and the sequential transmission 42 is changed from the neutral state to the fourth speed by the four shift operations. At this time, the shift operation sound is generated four times.
- the gear stage of the sequential transmission 42 is maintained in the high-speed stage group during the period of high-speed inertial force running. Therefore, the number of shift operations is limited. Therefore, the number of times and the period during which the shift operation sound is generated are shortened. That is, the shift operation noise and vibration are suppressed.
- the engine 20 is in an idling operation state or a stopped state. Therefore, the sound generated from the engine 20 during traveling is reduced. Further, the friction clutch 52 is continuously disconnected by the high-speed inertial force traveling. Therefore, the decrease in the speed of the lean vehicle 1 in the high-speed inertial force traveling is suppressed as compared with the state in which the engine brake is operated, for example. That is, the actuator-driven sequential multi-speed transmission 40 can be driven by inertial force without being changed to the neutral state.
- the gear stage is maintained in the high-speed stage group during high-speed inertial force running, the number of shift operations is performed even when the gear stage is adjusted before the end of high-speed inertial force running so that reacceleration is easy. And the period is suppressed. That is, the shift operation noise and vibration are suppressed.
- FIG. 2 is a flowchart illustrating the operation of high-speed inertial force running in the lean vehicle 1 of FIG.
- the operation of high-speed inertial force running in the lean vehicle 1 is executed, for example, by executing a program by a control device 80 having a processor.
- the control device 80 disengages the friction clutch 52 without running at high speed inertial force (No in S10). (S13), and then stop the engine 20 (S14).
- the control device 80 starts high-speed inertial force running (S15).
- the change of the state of high-speed inertial force running (S15) is executed, for example, by updating the data stored in the memory.
- step S14 the engine 20 is in an idling state instead of being stopped.
- the control device 80 returns the engine 20 to the operating state according to the acceleration instruction (S21), and adjusts the gear stage by the shift operation (S21). S22), and the clutch connection is executed (S23).
- the control device 80 ends the high-speed inertial force running (S24).
- the control device 80 also returns the engine 20 (Yes in S25) when the speed of the lean vehicle 1 decreases during high-speed inertial force running and reaches the lower limit speed in the range suitable for high-speed inertial force running (Yes).
- S21 the gear stage is adjusted (S22), and the clutch connection is executed (S23).
- a clutch connection is made when an acceleration instruction or a deceleration instruction is output during high-speed inertial force running as the operation of step S20 in the control device 80.
- the operation of executing (S23) can also be adopted. For example, by executing the clutch connection (S23) when the deceleration instruction is output, more powerful deceleration by the engine brake becomes possible.
- control device 80 starts the engine 20 in order to return the engine 20 to the operating state according to the acceleration instruction in step S21.
- the control device 80 starts the engine 20 by driving the crankshaft 24 to the start generator 30.
- the control device 80 can also increase the rotational speed by driving the crankshaft 24 to the starting generator 30. In this way, the control device 80 drives the crankshaft 24 to the starting generator 30 in step S21 before the clutch actuator 51 changes the friction clutch 52 to the connected state in step S23.
- step S26 for example, when the speed of the lean vehicle 1 gradually decreases during high-speed inertial force traveling, the gear stage is reduced according to the speed. In this case as well, the gear stage is selected within the high-speed stage group.
- the control device 80 a configuration in which the gear stage is not adjusted during high-speed inertial force traveling can also be adopted. Part (b) of FIG. 1 shows a change in the gear stage when the gear stage adjustment is not performed during high-speed inertial force traveling.
- FIG. 3 is a time chart illustrating the operation of a modified example in which the gear stage is adjusted during high-speed inertial force traveling.
- the gear stage is adjusted (S26 in FIG. 2) during high-speed inertial force traveling.
- the control device 80 changes the gear stage according to the speed of the lean vehicle 1 during high-speed inertial force traveling. For example, when the speed of the lean vehicle 1 gradually decreases during high-speed inertial force traveling and the speed falls below the reference value for changing the gear stage at time t3', the control device 80 reduces the gear stage. At this time, since the friction clutch 52 is in the disengaged state, the influence on the running due to the change of the gear stage is suppressed. Even when the gear stage is adjusted during high-speed inertial force running, the gear stage is maintained in the high-speed stage group. That is, in the example shown in FIG. 3, the control device 80 does not select a gear stage lower than the third gear.
- the gear stage adjustment during high-speed inertial force traveling is not particularly limited except for the maintenance of the high-speed inertial force group.
- the gear stage adjustment (S26 in FIG. 2) during high-speed inertial force traveling may not be performed.
- the adjustment of the gear stage (S22 in FIG. 2) at the end of the high-speed inertial force running may not be performed.
- FIG. 4 is a schematic side view showing an application example of the lean vehicle 1 of the first embodiment.
- the elements corresponding to the first embodiment are designated by the same reference numerals.
- the lean vehicle 1 shown in FIG. 4 includes a frame 2, a handlebar 3, a step 4, an engine 20, a sequential transmission 42, a friction clutch 52, an acceleration indicator 131, and a control device 80. .. Further, the lean vehicle 1 includes a fork 5, a rear wheel as a drive wheel 15, a front wheel 14, a seat 16, a power storage device 17, a rear arm 18, and an exhaust gas purification device 90.
- the sheet 16 is a saddle type.
- the driver of the lean vehicle 1 sits across the seat 16 and puts his foot on step 4 while driving.
- the power storage device 17 stores electric power.
- the vehicle speed sensor 151 detects the vehicle speed of the lean vehicle 1.
- the acceleration instruction unit 131 is an accelerator grip for the driver to instruct the acceleration of the lean vehicle 1.
- the acceleration indicator 131 is provided with an accelerator sensor 133.
- the accelerator sensor 133 detects the amount of operation of the acceleration instruction unit 131 by the driver.
- the acceleration instruction unit 131 outputs an instruction according to the amount of operation by the driver via the accelerator sensor 133.
- the instructions also include the level of manipulation.
- the engine 20 is supported by the frame 2. More specifically, at least a portion of the engine 20 is attached to the frame 2.
- the engine 20 outputs power toward the drive wheels 15. Power is transmitted to the drive wheels 15 via the friction clutch 52, the sequential transmission 42, and the chain 181.
- the exhaust gas purification device 90 is connected to the engine 20 via an exhaust pipe.
- the exhaust gas purifying device 90 has a catalyst 91 for purifying the exhaust gas.
- the catalyst 91 promotes the chemical reaction of harmful components such as hydrocarbons (HC), carbon monoxide (CO), and nitrogen oxides (NOx) contained in the exhaust gas to make them harmless.
- FIG. 5 is an enlarged cross-sectional view showing the engine 20 shown in FIG. 4 and the devices around the engine 20.
- the engine 20, the starting generator 30, the sequential transmission 42, and the friction clutch 52 constitute an engine unit 10.
- the sequential transmission 42 and the starting generator 30 are arranged inside the engine case 21.
- the engine 20 includes a crankshaft 24, a connecting rod 25, and a piston 26.
- the piston 26 reciprocates and is converted into the rotation of the crankshaft 24 via the connecting rod 25.
- Exhaust gas is discharged from the engine 20 as the engine 20 operates.
- the exhaust gas passes through the catalyst 91 of the exhaust gas purification device 90 and is purified.
- the ability of the exhaust gas purifying device 90 to purify the exhaust gas depends on the temperature of the catalyst 91.
- the catalyst 91 can purify the exhaust gas to a required degree at a temperature higher than the lower limit of activity temperature. However, if the temperature of the catalyst 91 becomes too high, it may deteriorate.
- the exhaust gas purifying device 90 is arranged at a position where it receives a running wind. Vibration is generated from the engine 20 as the engine 20 operates.
- the vibration transmitted from the engine 20 to the frame 2 is transmitted to the handlebar 3 and the step 4 via the frame 2 shown in FIG.
- the sequential transmission 42 is driven by the shift actuator 41.
- the friction clutch 52 is provided on the power transmission path 60 between the engine 20 and the sequential transmission 42.
- the friction clutch 52 is driven by the clutch actuator 51.
- the clutch actuator 51 is a motor.
- the clutch actuator 51 changes the state of the friction clutch 52, for example, via a drive mechanism.
- the starting generator 30 is connected to the crankshaft 24 so as to rotate at a fixed speed ratio with respect to the crankshaft 24.
- the starting generator 30 is connected to the crankshaft 24 without a power interruption mechanism such as a friction clutch 52.
- the control device 80 has an inverter 70.
- a starting generator 30 and a power storage device 17 are connected to the inverter 70.
- the power storage device 17 supplies electric power to the start generator 30.
- the starting generator 30 operates as a generator
- the power storage device 17 is charged by the electric power generated by the starting generator 30.
- the inverter 70 controls the current flowing between the power storage device 17 and the starting generator 30.
- the control device 80 acquires the vehicle speed of the lean vehicle 1 based on the signal output from the vehicle speed sensor 151 (see FIG. 4).
- the control device 80 acquires an acceleration instruction or a non-acceleration instruction of the acceleration instruction unit 131 based on the signal output from the accelerator sensor 133.
- the control device 80 also acquires the operation amount of the acceleration instruction unit 131.
- the control device 80 controls the operation of the engine 20 by controlling the spark plug of the engine 20 and the fuel injection device.
- the control device 80 connects and disconnects the friction clutch 52 by controlling the clutch actuator 51. Further, the control device 80 changes the gear stage of the sequential transmission 42 by controlling the shift actuator 41.
- the control device 80 is composed of, for example, a central processing unit 80a and a computer having a storage device 80b.
- the central processing unit 80a performs arithmetic processing based on the control program.
- the storage device 80b stores data related to programs and operations.
- the control device 80 is realized by a central processing unit 80a, a storage device 80b, and a control program.
- the function of controlling the engine 20, the function of controlling the start generator 30, the function of controlling the sequential transmission 42, and the function of controlling the friction clutch 52 are different from each other. It may be configured as a device separated from each other. Further, these functions may be configured as an integrated device.
- FIG. 6 is a time chart illustrating the operation of the lean vehicle 1 in the second embodiment.
- FIG. 6 shows the output of the acceleration indicator 131 and the rotation speed of the engine 20.
- the scales of the rotational speed (vertical axis) and time (horizontal axis) of the engine 20 are enlarged from the chart shown in the part (b) of FIG. 1 for easy viewing.
- the lean vehicle 1 of the present embodiment is different from the lean vehicle 1 of the first embodiment in the operation of step S14 (FIG. 2). Since the other points in the present embodiment are the same as those in the first embodiment, the drawings and reference numerals in the first embodiment will be diverted and described.
- the control device 80 of the lean vehicle 1 in the present embodiment controls the engine 20 so that the rotation speed of the engine 20 during the period of high-speed inertial force traveling avoids the handle resonance speed band Vh.
- the handle resonance speed band Vh is a band of the rotation speed of the engine 20 corresponding to the resonance frequency band of the handle bar 3 attached to the frame 2.
- the resonance frequency band of the handlebar 3 attached to the frame 2 is a frequency band that vibrates with an amplitude larger than the amplitude at other frequencies when the handlebar 3 attached to the frame 2 vibrates by receiving an external force. ..
- the control device 80 controls the engine 20 so as to avoid the step resonance speed band Vs.
- the step resonance speed band Vs is a band of the rotation speed of the engine 20 corresponding to the resonance vibration frequency band of step 4 attached to the frame 2.
- the resonance vibration frequency band of step 4 is a frequency band that vibrates with an amplitude larger than the amplitude at other frequencies when the step 4 attached to the frame 2 vibrates by receiving an external force.
- the handle resonance speed band Vh of the lean vehicle 1 measures the vibration amplitude in the handlebar 3 while gradually changing the rotation speed of the engine 20, and measures the rotation speed at which the vibration amplitude specifically increases. Can be measured.
- the step resonance speed band Vs of the lean vehicle 1 is measured by measuring the vibration amplitude of step 4 while gradually changing the rotation speed of the engine 20, and measuring the rotation speed at which the vibration amplitude specifically increases. can.
- the handle resonance speed band Vh and the step resonance speed band Vs are not limited to this, and can be acquired in the following two steps, for example. First, when vibration is applied to the engine 20 from the outside with the engine 20 stopped and the frequency of the vibration is gradually changed, the frequency bands in which the amplitude of the vibration specifically increases are the resonance frequencies.
- the relationship between the rotation speed of the engine 20 and the frequency of vibration in the engine 20 is acquired while gradually changing the rotation speed of the engine 20.
- the handle resonance speed band Vh and the step resonance speed band Vs are acquired from the relationship between the acquired resonance frequency band and the acquired rotation speed. Further, the handle resonance speed band Vh and the step resonance speed band Vs can be estimated by using the measurement result of the already manufactured vehicle having a similar configuration or the simulation of the vibration model before the manufacture of the lean vehicle 1. can.
- step S14 the control device 80 sets the rotation speed of the engine 20 so that the rotation speed of the engine 20 becomes a target speed Vc avoiding the handle resonance speed band Vh and the step resonance speed band Vs.
- the control device 80 controls the rotation speed of the engine 20 by controlling, for example, the amount of air supplied to the engine 20 and the fuel.
- the method of controlling the rotation speed is not particularly limited.
- the control device 80 may, for example, stop the combustion operation of the engine 20 and drive the crankshaft 24 to the start generator 30. In this case, the control device 80 controls the rotation speed of the engine 20 by controlling the starting generator 30.
- the rotation speed of the engine 20 during the period of high-speed inertial force running avoids the handle resonance speed band Vh and the step resonance speed band Vs. Therefore, during the period of high-speed inertial force running, the vibration transmitted to the driver's hands and feet as well as the sound is suppressed.
- FIG. 7 is a time chart illustrating the operation of the lean vehicle 1 in the third embodiment.
- FIG. 7 shows the output of the acceleration indicator 131 and the rotation speed of the engine 20.
- the scales of the rotational speed (vertical axis) and time (horizontal axis) of the engine 20 are enlarged from the chart shown in the part (b) of FIG. 1 for easy viewing.
- the lean vehicle 1 of the present embodiment is different from the lean vehicle 1 of the first embodiment in the operation of step S14 (FIG. 2). Since other points in this embodiment are the same as those in the first embodiment, the drawings and reference numerals in the first embodiment will be diverted and described.
- the control device 80 controls the engine 20 so that the rotation speed of the engine 20 during the period of high-speed inertial force running makes the temperature of the catalyst 91 higher than the lower limit temperature of the activity.
- the control device 80 does not stop the combustion operation of the engine 20 in step S14 (FIG. 2), but continues. As a result, the heat of the engine 20 is supplied to the catalyst 91 using the exhaust gas as a medium.
- the control device 80 maintains, for example, the rotation speed of the engine 20 at a target speed Vc larger than the lower limit speed Vt. , Control the engine 20.
- the engine 20 operates so that the temperature of the catalyst 91 is higher than the lower limit temperature of the activity of the catalyst during the period of high-speed inertial force running.
- the exhaust gas purifying device 90 is in a state where the exhaust gas of the engine 20 can be appropriately purified before the engine 20 starts the operation for acceleration. Therefore, it is possible to reduce the noise and vibration generated during the high-speed inertial force running while enabling the purification of the exhaust gas after the high-speed inertial force running is completed.
- a method different from the above method may be adopted.
- a temperature sensor is provided in the vicinity of the catalyst 91 or the catalyst 91, and the control device 80 feedback-controls the rotation speed of the engine 20 so that the temperature detected by the temperature sensor becomes higher than the lower limit of activity temperature.
- the temperature of the traveling catalyst 91 is controlled more precisely.
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Abstract
Description
また、特許文献2には、リーン車両の一例として自動二輪車が示されている。特許文献2の自動二輪車は、車体フレームとパワーユニットとを備えている。パワーユニットは、エンジンを備えている。特許文献2の自動二輪車では、車体フレームにパワーユニットが取付けられている。しかし、取付けに弾性マウントが採用されており、パワーユニットから車体を介して運転者の手足に伝達される振動、及び、振動に起因して車体から生じる音の低減が図られている。
リーン車両は、自動車のようなエンジンルームも、運転者を収容するキャビンも有さない。つまり、リーン車両のエンジンユニットは、通常、車体の外部に露出している。また、リーン車両のエンジンは、車体のフレームに取り付けられている。このため、エンジンユニット及び車体から生じる音及び振動の運転者への影響が、より大きい。
本発明は、アクチュエータ駆動式シーケンシャル多段変速装置を有するリーン車両の走行時の音及び振動を低減することを目的とする。
コースト走行の終了時には、クラッチが切断状態となり、変速機のギア段がニュートラル状態から戻される。この後、エンジンが動作を開始し、再びクラッチが接続状態になる。
シフト動作は、例えば、モータの動作、シフトカム機構の動作、ドグ歯車の係合解除、ドグ歯車の移動、及び、再係合を含む。シフト動作時には、変速機からシフト動作音及び振動が生じる。変速機は、通常、車体の外部に露出したエンジンユニットに設けられている。このため、リーン車両の変速機から生じるシフト動作音は、例えば自動車の場合と比べより大きな音で運転者に聞こえる。また更に、シフト動作時、エンジンは、エンジンの音を低減するため動作停止状態又はアイドリング状態にある。このため、変速機から生じるシフト動作音及び振動は、際だって認識される。6回のシフト動作が実施される場合、シフト動作音が、6回発生する。上述したように各回のシフト動作は、順次実施されるシフトカム機構の動作、ドグ歯車の係合解除、移動、そして、再係合を含む。アクチュエータによって駆動される変速機が、たとえ運転者の操作力で動作する変速機よりも速く動作できても、6回のシフト動作には、シフト動作音で各回が判別できる程度の時間がかかる。このため、エンジンの音及び振動が低減されるにもかかわらず、今度はシフト動作音と振動が生じ、しかもシフト動作音及び振動は、長い期間に亘って生じる。
検討の結果、本発明者は、アクチュエータ駆動式シーケンシャル多段変速装置の状態を敢えてニュートラル状態にしないことで、音及び振動を低減できることを見出した。例えば、高速段群に属するギア段における走行中に、運転者の操作に基づく非加速指示が出力された場合、摩擦クラッチがクラッチアクチュエータに駆動され切断状態となり、切断状態が継続する。これによって、アクチュエータ駆動式シーケンシャル多段変速装置がニュートラル状態にならなくても、高速慣性力走行が継続する。つまり、高速段群に属するギア段からニュートラルまで変化するようなシフト動作が実行されなくても、高速慣性力走行が継続する。また、高速慣性力走行でギア段が高速段群に維持されるので、例えば、高速慣性力走行の後でクラッチが接続状態となる時に再加速が容易となるようギア段が事前に調整されるような場合でも、シフト動作の回数が制限される。このため、シフト動作音が発生する回数及び期間が短くなる。つまり、シフト動作音及び振動が抑制される。
また、リーン車両では、自動車の場合と異なり、運転者も走行風を受ける。即ち、走行時のリーン車両は、車体と運転者の両方の空気抵抗を受ける。慣性力走行におけるリーン車両の速度は、低下しやすい。高速段群に属するギア段を条件とすることで、比較的高速での走行時に高速慣性力走行が開始しやすい。このため、音及び振動が抑制されるリーン車両の慣性力走行を継続しやすくすることができる。
従って、アクチュエータ駆動式シーケンシャル多段変速装置を有するリーン車両の走行時の音及び振動が低減される。
フレームは、リーン車両の全体に掛かる荷重を支持する部品である。フレームは、例えばフォーク及びスイングアームを介して車輪から受ける荷重を支持する。フレームは、例えば、フォーク及びスイングアームが取付けられるメインフレームである。フレームは特に限定されず、例えば、リーン車両の全体に掛かる荷重を支持する機能を有するエアクリーナ又は燃料タンク等を含んでもよい。
ハンドルバーは、操向用のハンドルである。ハンドルバーは、例えばフレームに回転可能に支持されたフォークに固定されることによってフレームに取付けられている。
ステップは、運転者の足を載せる部品である。ステップは、例えば、フレームに直接取付けられる。ステップは、特に限られず、例えばフレームに固定された部材を介して間接的に取付けられてもよい。
加速指示部は、リーン車両への加速指示又は非加速指示を出力する。加速指示部は、例えば、電気信号としての加速指示を出力する。加速指示部は、例えば、ハンドルバーに取付けられたアクセルグリップである。例えば、加速指示部は、運転者に操作されることで加速指示を出力する。加速指示部は、加速の操作が無い場合に、非加速指示を出力する。例えば、加速指示部は、加速指示を出力しない場合に、非加速指示を出力するとみなされてもよい。例えば制御装置は、加速指示部から出力された信号を基準と比較し、比較結果に応じて非加速指示が出力されたか、又は加速指示が出力されたかを判定してもよい。例えば、加速指示部の操作の位置に応じて出力される信号のレベルが基準レベル未満の場合に、加速指示部が非加速指示を出力したと判定してもよい。
ただし、加速指示部の出力形態は特に限定されず、例えば、非加速指示が減速指示と慣性走行指示に区別されなくてもよい。
なお、エンジンの出力が無ければリーン車両が減速する状況(例えば平坦路走行時又は登坂時)において車速を維持するための指示は、加速指示に相当する。また、降坂時には、エンジンの出力が無くてもリーン車両が加速する。このとき、加速指示は出力されていない。これは、非加速指示が出力されていることと同義である。加速指示部の形態は、特に限定されず、例えば目標の速度までリーン車両を加速する制御機能を有するクルーズコントロール制御部でもよい。クルーズコントロール制御部は、通常、クルーズコントロール制御部が車速維持のために加速指示を出力する加速指示出力状態(X)、又は、クルーズコントロール制御部が加速指示を出力しなくても車速を維持できる加速指示非出力状態(Y)のいずれかとなる。クルーズコントロール制御部は、状態(Y)において、非加速指示を出力している。クルーズコントロール制御部は、平坦路走行時又は登坂時には、通常、状態(X)となる。クルーズコントロール制御部は、降坂時には、坂の傾斜角などに応じて、状態(X)又は状態(Y)のいずれかとなる。
シーケンシャル変速機では、あるタイミングにおいて1つの状態が選択されている。シーケンシャル変速機では、ギア段に応じた変速比が設定されている。エンジンから出力される回転速度は、選択された1つの変速比で変更され、駆動輪に伝達される。シーケンシャル変速機は、高速段群又は低速段群に属する多段のギア段を有する。シーケンシャル変速機は、更に、ニュートラル状態を有する。シーケンシャル変速機は、ニュートラル状態及び複数の非ニュートラル状態を有する。非ニュートラル状態は、高速段群及び低速段群を含む。
高速段群は、非ニュートラル状態の全ギア段のうち半分以上のギア段が属する。より詳細には、高速段群は、シーケンシャル変速機が8段変速タイプの場合における8から5速であり、7段変速タイプの場合における7から4速であり、6段変速タイプの場合における6から4速であり、5段変速タイプの場合における5から3速であり、そして、4段変速タイプの場合における4から3速である。低速段群は、非ニュートラル状態における高速段群の残りが属する。
シーケンシャル変速機では、1つのシフト動作毎にギア段が1段増加又は減少する。例えば、ニュートラル状態から、1速、2速、3速、4速…の順に状態が選択される。また、4速から、3速、2速、1速、及びニュートラル状態の順に状態が選択される。つまり、例えば、3速の次に1速が選択されることなく、また3速の次にニュートラル状態が選択されることはない。なお、シーケンシャル変速機として、例えば、操作順においてニュートラル状態と2速の間に1速が配置される構成が、採用され得る。ただし、シーケンシャル変速機は特に限定されず、例えば、1速と2速の間にニュートラル状態が配置された構成でもよい。シーケンシャル変速機は、高速慣性力走行中におけるシフト動作の回数が所定回数以下になるように制御されてもよい。当該所定回数は、1、2又は3回のいずれかで設定されてもよい。
シフトアクチュエータは、シーケンシャル変速機を駆動してシフト動作させる。シーケンシャル変速機は、シフトアクチュエータに駆動されてギア段の選択を行なう。シフトアクチュエータは、例えば電動モータである。シフトアクチュエータは、特に限定されず、例えば、ソレノイド又は油圧アクチュエータでもよい。
摩擦クラッチは、エンジンと駆動輪との間の動力伝達経路に設けられる動力伝達装置である。摩擦クラッチは、接続状態又は切断状態を有する。例えば、駆動力の一部が実質的に伝達されない状態は、つまり、いわゆる半クラッチ状態は切断状態に含まれる。摩擦クラッチは、例えば、入力軸と出力軸のそれぞれに設けられた板状部材の摩擦力により動力を伝達する。
摩擦クラッチは、例えば、遠心クラッチを含まない。また、摩擦クラッチは、流体を介してパワーを伝達するトルクコンバータを含まない。このため、リーン車両は、加速操作に対する高い応答性を有する。
摩擦クラッチは、クラッチアクチュエータで駆動される。クラッチアクチュエータは、例えば電動モータである。クラッチアクチュエータは、特に限定されず、例えば、ソレノイド又は油圧アクチュエータでもよい。
高速慣性力走行において、制御装置は、クラッチアクチュエータにクラッチを切断状態にさせるとともに、エンジンをアイドリング動作状態又は停止状態とする。制御装置は、高速慣性力走行の期間、シフトアクチュエータにシーケンシャル変速機のギア段を高速段群に維持させる。制御装置は、高速慣性力走行が終了した後も引き続きシーケンシャル変速機のギア段を高速段群に維持してよい。ただし、制御装置は、特に限定されず、高速慣性力走行が終了した後、シーケンシャル変速機のギア段を低速段群に変更してもよい。
制御装置において、アクチュエータ駆動式シーケンシャル多段変速装置及びアクチュエータ駆動式クラッチを制御する部分と、エンジンを制御する部分とは、例えば物理的に異なる装置で構成されてもよい。また、例えば、これらの部分は一体の装置で構成されてもよい。
制御装置は、例えば、プログラムを記憶するメモリとプログラムを実行するプロセッサで構成される。制御装置は、特に限定されず、例えば、プログラムを含まない論理回路で構成されてもよい。
なお、非加速指示が減速指示と慣性走行指示に区別される場合、高速慣性力走行は、さらに非加速指示の慣性走行指示が出力されることを条件として実行されてもよい。つまり、非加速指示のうち、減速指示が出力される場合には高速慣性力走行が保留されることとしてもよい。高速慣性力走行が保留される場合、摩擦クラッチは接続状態のままであり、エンジンブレーキが動作する。
下限速度は、30km/h以上50km/h以下の範囲内に含まれるように設定されてもよい。下限速度が例えば30km/hである場合、高速慣性力走行で高速段群のギア段を継続しつつ、高速慣性力走行の終了時にエンジンでの加速に対応しやすい。下限速度が例えば40km/hである場合、走行するリーン車両自体の慣性も利用して、高速慣性力走行を継続しやすくすることができる。また、下限速度が例えば50km/hである場合、リーン車両のセルフステアリング特性及び走行時の直進性を利用して、高速慣性力走行を継続しやすくすることができる。
なお、高速慣性力走行は、加速指示部によって加速指示又は減速指示が出力されることを条件として、終了してもよい。また、高速慣性力走行は、加速指示部によって加速指示が出力されるか、又は、減速指示が出力されか、又は、リーン車両の速度が、前記下限速度を下回るかの論理和を条件として、終了してもよい。この場合、ギア段が高ギア段群に属していてもエンジンブレーキを利用することができる。
このようにしてエンジンから発生する音及び振動が低減され、さらに、この高速慣性力走行状態におけるギア段が高速段群に維持されることで、シーケンシャル変速機のシフト動作に起因するシフト動作音及び振動が低減される。
従って、アクチュエータ駆動式シーケンシャル多段変速装置を有するリーン車両の走行時の音及び振動が低減される。
(2) (1)のリーン車両であって、
前記制御装置は、前記高速慣性力走行の期間に前記加速指示部から前記加速指示が出力された場合、前記エンジンを前記加速指示に応じた動作状態にするとともに、前記クラッチアクチュエータに前記摩擦クラッチを接続状態に変更させる。
このため、クラッチ操作なしの簡潔な操作で、音及び振動が低減された高速慣性力走行を終了し再加速することができる。
(3) (2)のリーン車両であって、
前記リーン車両は、
前記制御装置は、前記加速指示部から前記加速指示が出力された場合、前記シフトアクチュエータに前記シーケンシャル変速機を、前記高速段群のうちの前記加速指示に応じたギア段にさせた後、前記クラッチアクチュエータに前記摩擦クラッチを接続状態に変更させるとともに前記エンジンを前記加速指示に応じた動作状態にする。
(4) (2)または(3)のリーン車両であって、
前記リーン車両は、
前記エンジンのクランクシャフトに対し固定された速度比で回転するよう前記クランクシャフトと接続され、前記エンジンの始動時に前記クランクシャフトを駆動し、前記エンジンの燃焼動作時に前記エンジンに駆動されて発電する始動発電機を備え、
前記制御装置は、前記クラッチアクチュエータに前記摩擦クラッチを接続状態に変更させるよりも前に、前記始動発電機に前記クランクシャフトを駆動させる。
(5) (1)から(4)何れか1のリーン車両であって、
前記制御装置は、前記高速慣性力走行の期間における前記エンジンの回転速度が、前記フレームに取付けられた前記ハンドルバーの共振周波数帯に対応する前記エンジンのハンドル共振速度帯、及び、前記フレームに取付けられた前記ステップの共振振動周波数帯に対応する前記エンジンのステップ共振速度帯を避けるように、前記エンジンを制御する。
(5)のリーン車両によれば、高速慣性力走行の期間にエンジンの回転速度が、ハンドル共振速度帯及びステップ共振速度帯を避けているため、ハンドル又はステップの共振による振動の増大が抑制される。従って、高速慣性力走行の期間に音と共に運転者の手及び足に伝わる振動も抑制される。
(6) (1)から(6)何れか1のリーン車両であって、
前記リーン車両は、前記エンジンの排ガスを浄化する触媒を有し前記エンジンと接続された排ガス浄化装置を備え、
前記制御装置は、前記高速慣性力走行の期間における前記エンジンの回転速度が、前記エンジンからの排ガスによって前記触媒の温度を前記触媒の活性下限温度よりも高くする回転速度となるように、前記エンジンを制御する。
(6)のリーン車両によれば、エンジンは、高速慣性力走行の期間、制御装置の制御によって、触媒の温度を触媒の活性下限温度よりも高くするような回転速度で動作する。
加速指示に応じて高速慣性力走行が終了する際、エンジンが加速のための動作を開始する前に、排ガス浄化装置が、エンジンの排ガスを浄化できる状態にある。従って、高速慣性力走行が終了した後の排ガスの浄化を可能としつつ、高速慣性力走行中に発生する音及び振動を低減することができる。
図1は、本発明の第一実施形態に係るリーン車両を説明する図である。図1のパート(a)は、リーン車両の概略構成を示す図である。図1のパート(b)は、リーン車両の動作を示すタイムチャートである。
ハンドルバー3は、フレーム2に取付けられる。ハンドルバー3は、リーン車両1の運転者に把持される。ハンドルバー3は、操向用のハンドルである。ハンドルバー3は、フレーム2に回転可能に支持されたフォーク5に固定される。これによってハンドルバー3は、フレーム2に取付けられている。
シーケンシャル変速機42は、高速段群又は低速段群に属する多段のギア段を有する。シーケンシャル変速機42は、さらにニュートラル状態を有する。高速段群は、ギア段のうち、高速に対応する半分のギア段に対応する。低速段群は、残りのギア段に対応する。
シーケンシャル変速機42は、1つのシフト動作毎にギア段を1段増加又は減少する。即ち、ギア段は、逐次的に選択される。例えば、2速の次に、3速を選択せずに4速を選択することはできない。各ギア段に対応した変速比によって、エンジン20から出力される回転速度が変換される。エンジン20から出力される回転速度は、選択されたギア段に対応する変速比で変換され、駆動輪15に伝達される。ニュートラル状態のシーケンシャル変速機42は、エンジン20から出力される回転速度を駆動輪15に伝達しない。
例えば、シーケンシャル変速機42が7段変速タイプの場合、シーケンシャル変速機42は、1速から7速までの7つのギア段とニュートラル状態を有する。高速段群は、1速から7速までの7つのギア段のうち、高速に対応する半分のギア段である。即ち、7速から4速までのギア段は、高速段群に属する。3速から1速までのギア段は、低速段群に属する。
例えば、シーケンシャル変速機42が6段変速タイプの場合、シーケンシャル変速機42は、1速から6速までの6つのギア段とニュートラル状態を有する。高速段群は、1速から6速までの6つのギア段のうち、高速に対応する半分のギア段である。即ち、6速から4速までのギア段は、高速段群に属する。3速から1速までのギア段は、低速段群に属する。
例えば、シーケンシャル変速機42が5段変速タイプの場合、シーケンシャル変速機42は、1速から5速までの5つのギア段とニュートラル状態を有する。高速段群は、1速から5速までの5つのギア段のうち、高速に対応する半分のギア段である。即ち、5速から3速までのギア段は、高速段群に属する。2速から1速までのギア段は、低速段群に属する。
例えば、シーケンシャル変速機42が4段変速タイプの場合、シーケンシャル変速機42は、1速から4速までの4つのギア段とニュートラル状態を有する。高速段群は、1速から4速までの4つのギア段のうち、高速に対応する半分のギア段である。即ち、4速から3速までのギア段は、高速段群に属する。2速から1速までのギア段は、低速段群に属する。
加速指示部131は、より詳細には、ハンドルバー3に取付けられたアクセルグリップである。加速指示部131は、運転者に操作されることで加速指示を出力する。アクセルグリップである加速指示部131が加速位置に変位されることで、加速指示を出力するとともにエンジン20に設けられた図示しないスロットル弁の開度が制御される。
例えば、加速指示部131が加速指示を出力すると、制御装置80に制御された図示しないモータによってスロットル弁の開度が増大する。なお、スロットル弁は、モータを有さず、例えば加速指示部131としてのアクセルグリップと機械式ワイヤで接続され、アクセルグリップの操作力によって開度が変化する構成でもよい。
エンジン20(エンジンケース21)は、通常、車体の外部に露出している。また、リーン車両1のエンジン20(エンジンケース21)は、車体のフレーム2に取り付けられている。従って、リーン車両1におけるエンジン20、及びシーケンシャル変速機42から生じる振動は、フレーム2で伝達されやすい。このため、リーン車両1では、エンジン20、及びシーケンシャル変速機42から生じる音及び振動の運転者への影響がより大きい。
例えば、通常の自動車のエンジンは、平面視において自動車全体の重心からずれた位置に配置される。このため重心を中心とする振動が、ステアリングホイールを含む自動車全体の振動として伝達されにくい。
また、例えば、リーン車両1全体の重量に対するエンジン20の重量の比は、通常の自動車における比よりも大きい。例えば、エンジン20の重量は、フレーム2の重量よりも大きいか、又は、フレーム2の重量と同等である。このため、エンジン20の振動は、フレーム2を介してハンドルバー3及びステップ4に伝達されやすい。このため、フレーム2に取付けられたエンジン20の振動が、ハンドルバー3及びステップ4を介して運転者の手及び足に伝達される。
また、例えば、リーン車両1におけるエンジン20からハンドルバー3までの距離は、通常の自動車のエンジンからステアリングホイールまでの距離よりも短い。また、リーン車両1におけるエンジン20からステップ4までの距離は、例えば、通常の自動車のエンジンから車室の床面までの距離よりも短い。このため、リーン車両1におけるエンジン20の振動は、フレーム2を介してハンドルバー3及びステップ4に伝達されやすい。
本実施形態の制御装置80は、加速指示部131の加速指示、エンジン20の回転速度、及びリーン車両1の速度に応じてギア段を制御する。例えば、加速指示が出力されている場合、エンジン20の回転速度が切替え基準の速度に達するごとに、シーケンシャル変速機42のギア段を増加するシフトアップを実施する。
ギア段の変更の契機として、種々の条件が採用され得る。例えば、リーン車両1は、図示しないシフトアップスイッチとシフトダウンスイッチとを備え、制御装置80は、運転者によるシフトアップスイッチとシフトダウンスイッチの操作に応じてギア段を変更してもよい。この場合、例えば、制御装置80は、高速慣性力走行の期間だけ、リーン車両1の速度に応じてギア段を変更してもよい。また、制御装置80は、スイッチによらず、常にリーン車両1の速度等に応じてギア段を変更してもよい。また、制御装置80は、ギア段を変更せず、摩擦クラッチ52の状態を変更する機能だけを有してもよい。
高速慣性力走行では、摩擦クラッチ52がクラッチアクチュエータ51により切断状態にされ、且つ、エンジン20がアイドリング動作状態又は停止状態である。高速慣性力走行は、運転者がハンドルバー3を把持し且つステップ4に足を載せてリーン車両1を操作することによって実行される。すなわち、高速慣性力走行はリーン車両1における通常の走行状態で実行される。
エンジン20がアイドリング動作状態又は停止状態になることで、エンジン20の回転速度は低下又はゼロになる。エンジン20から生じる音を低減すことができる。また、エンジン20からハンドルバー3及びステップ4へ伝達される振動を低減することができる。
しかし、時刻t1における変速段は、高速段群でなく低速段群に属する。従って、制御装置80は、高速慣性力走行を実行しない。つまり、摩擦クラッチ52の接続状態が維持される。リーン車両1は、いわゆるエンジンブレーキが作動した状態になる。この結果、時刻t1から時刻t2までリーン車両1の速度が比較的急速に低下する。
この後、エンジン20の回転速度の増加に応じて、制御装置80が、シフトアップを実行する。この結果、ギア段が、3速、4速、5速に変化する。
時刻t3まで、リーン車両1の速度の増加が継続する。
制御装置80は、高速慣性力走行の期間、シフトアクチュエータ41にシーケンシャル変速機42のギア段を高速段群に維持させる。
より詳細には、加速指示部131から加速指示が出力された場合、制御装置80は、シフトアクチュエータ41にシーケンシャル変速機42のギア段を、加速指示に応じたギア段にさせる。例えば、制御装置80は、シフトアクチュエータ41にシーケンシャル変速機42のギア段を、より低いギア段に変更させる。但し、制御装置80は、ギア段を高速段群の範囲内で変更する。この後、制御装置80は、エンジン20を加速指示に応じた動作状態にするとともに、クラッチアクチュエータ51に摩擦クラッチ52を接続状態に変更させる。摩擦クラッチ52を接続状態になることで、高速慣性力走行が終了する。
従って、少なくとも高速慣性力走行の期間、ギア段は、高速段群に維持される。
比較例では、慣性力走行の期間、シーケンシャル変速機42がニュートラル状態(N)になり、摩擦クラッチ52は接続状態になる。慣性力走行の期間、エンジン20から出力される動力の伝達が切断されるので、エンジン20をアイドリング動作状態又は停止状態しつつ、慣性力走行が可能である。エンジン20から生じる音及び振動が低減される。
しかし、比較例では、ギア段が高速段群に維持されない。即ち、比較例では、シーケンシャル変速機42におけるギア段が、5速から、4速、3速、2速、1速に変化し、そしニュートラル状態に変化する。このため、5回ものシフト動作が実行される。これは、シーケンシャル変速機42が、例えばトラック等の変速機とは異なり、1回のシフト動作で5速の状態をニュートラル状態に変更できないからである。
シフト動作時に、変速機からシフト動作音及び振動が生じる。このシフト動作時、エンジン20は、音及び振動を低減するため動作停止状態又はアイドリング状態にある。このため、変速機から生じるシフト動作音及び振動が際だって認識される。比較例のように5回のシフト動作が実施される場合、シフト動作音が、5回発生する。
また、比較例では、慣性力走行が終了する前に、摩擦クラッチ52が切断状態になり、シーケンシャル変速機42が、4回のシフト動作によって、ニュートラル状態から、4速に変更される。この時、シフト動作音が、4回発生する。
また、高速慣性力走行でギア段が高速段群に維持されるため、再加速が容易となるように高速慣性力走行の終了前にギア段が調整されるような場合でも、シフト動作の回数及び期間が抑制される。つまり、シフト動作音及び振動が抑制される。
リーン車両1における高速慣性力走行の動作は、例えば、プロセッサを有する制御装置80がプログラムを実行することにより実行される。
高速慣性力走行中でなく(S10でNo)、ギア段が高ギア段群に属し(S11でYes)、非加速指示が出力された場合(S12)、制御装置80は、摩擦クラッチ52を切断し(S13)、そして、エンジン20を停止する(S14)。制御装置80は、高速慣性力走行を開始する(S15)。高速慣性力走行の状態の変更(S15)は、例えばメモリに記憶されたデータを更新することで実行される。上記ステップS14は、エンジン20の停止の代わりにアイドリング状態になる。
高速慣性力走行中に加速指示が出力された場合(S20でYes)、制御装置80は、エンジン20を加速指示に応じた動作状態に復帰させ(S21)、シフト動作によってギア段を調整し(S22)、そして、クラッチ接続を実行する(S23)。制御装置80は、高速慣性力走行を終了する(S24)。
制御装置80は、高速慣性力走行中にリーン車両1の速度が低下して、高速慣性力走行に適した範囲の下限速度に達した場合(S25でYes)にも、エンジン20を復帰させ(S21)、ギア段を調整し(S22)、そして、クラッチ接続を実行する(S23)。
なお、例えば、非加速指示が慣性走行指示と減速指示に区別される場合、制御装置80におけるステップS20の動作として、高速慣性力走行中に加速指示又は減速指示が出力された場合に、クラッチ接続(S23)を実行する動作も採用可能である。例えば、減速指示が出力された場合にクラッチ接続(S23)を実行することで、エンジンブレーキによるより強力な減速が可能になる。
このようにして、制御装置80は、ステップS23でクラッチアクチュエータ51に摩擦クラッチ52を接続状態に変更させるよりも前に、ステップS21で、始動発電機30にクランクシャフト24を駆動させる。
この変形例では、高速慣性力走行中におけるギア段の調整(図2のS26)が実施される。制御装置80は、高速慣性力走行中に、リーン車両1の速度に応じてギア段を変更する。例えば、高速慣性力走行中にリーン車両1の速度が徐々に低下し、時刻t3’で速度がギア段変更のための基準値を下回る時、制御装置80は、ギア段を減少させる。この時、摩擦クラッチ52は切断状態なので、ギア段の変更による走行への影響が抑制される。
高速慣性力走行中におけるギア段の調整でも、ギア段は高速段群に維持される。つまり、図3に示す例において、制御装置80は、3速よりも低いギア段を選択しない。
図4は、第一実施形態のリーン車両1の適用例を示す概略側面図である。図4に示す応用例の各要素のうち、第一実施形態に対応する要素に同じ符号が付される。
また、リーン車両1は、フォーク5と、駆動輪15としての後輪と、前輪14と、シート16と、蓄電装置17と、リアアーム18と、排ガス浄化装置90と、を備えている。
排ガス浄化装置90は、エンジン20と排気管を介して接続されている。排ガス浄化装置90は、排ガスを浄化する触媒91を有する。触媒91は、例えば、排ガスに含まれる炭化水素(HC)、一酸化炭素(CO)、窒素酸化物(NOx)等の有害成分の化学反応を促進して無害化する。
エンジン20と、始動発電機30と、シーケンシャル変速機42と、摩擦クラッチ52とは、エンジンユニット10を構成する。シーケンシャル変速機42と、始動発電機30とは、エンジンケース21の内部に配置されている。
エンジン20の動作に伴い、エンジン20から振動が生じる。エンジン20からフレーム2に伝達された振動は、図4に示すフレーム2を介してハンドルバー3及びステップ4に伝達される。
制御装置80は、アクセルセンサ133から出力される信号に基づき、加速指示部131の加速指示、又は非加速指示を取得する。制御装置80は、加速指示部131の操作量も取得する。制御装置80は、エンジン20の点火プラグ、燃料噴射装置を制御することでエンジン20の動作を制御する。
制御装置80は、クラッチアクチュエータ51を制御することによって、摩擦クラッチ52の断続を行う。また、制御装置80は、シフトアクチュエータ41を制御することによって、シーケンシャル変速機42のギア段の変更を行う。
なお、制御装置80のうち、エンジン20を制御する機能と、始動発電機30を制御する機能と、シーケンシャル変速機42を制御する機能と、摩擦クラッチ52を制御する機能とは、互いに別の装置として互いに離れた装置として構成されてもよい。またこれらの機能は、一体の装置として構成されてもよい。
図6は、第二実施形態におけるリーン車両1の動作を説明するタイムチャートである。図6には、加速指示部131の出力とエンジン20の回転速度が示されている。エンジン20の回転速度(縦軸)及び時間(横軸)のスケールは、見やすさのため、図1のパート(b)に示すチャートよりも拡大されている。
また、制御装置80は、ステップ共振速度帯Vsを避けるように、エンジン20を制御する。ステップ共振速度帯Vsは、フレーム2に取付けられたステップ4の共振振動周波数帯に対応するエンジン20の回転速度の帯域である。ステップ4の共振振動周波数帯は、フレーム2に取付けられたステップ4が外力を受けて振動する場合に、他の周波数における振幅よりも大きい振幅で振動する周波数帯である。
リーン車両1のステップ共振速度帯Vsは、エンジン20の回転速度を徐々に変化させつつステップ4の振動の振幅を測定し、振動の振幅が特異的に増加する回転速度を測定することで、測定できる。
ハンドル共振速度帯Vh及びステップ共振速度帯Vsは、これに限らず、例えば、次の2段階で取得することも可能である。先ず、エンジン20を停止した状態で、エンジン20に外部から振動を印加し、振動の周波数を徐々に変化させた場合に、それぞれ振動の振幅が特異的に増加する周波数帯が、それぞれの共振周波数帯として取得される。次に、エンジン20の回転速度を徐々に変化させながら、エンジン20の回転速度とエンジン20における振動の周波数の関係が取得される。取得した共振周波数帯と取得された回転速度との関係からハンドル共振速度帯Vh及びステップ共振速度帯Vsが取得される。
また、ハンドル共振速度帯Vh及びステップ共振速度帯Vsは、リーン車両1の製造前に、既に製造された類似構成を有する車両の測定結果、又は、振動モデルのシミュレーションを利用して推定することもできる。
制御装置80は、例えば、エンジン20に供給される空気量及び燃料を制御することによって、エンジン20の回転速度を制御する。ただし、回転速度を制御の方法は特に限られない。制御装置80は、例えば、エンジン20の燃焼動作を停止し、始動発電機30にクランクシャフト24を駆動させてもよい。この場合、制御装置80は、始動発電機30を制御することによって、エンジン20の回転速度を制御する。
図7は、第三実施形態におけるリーン車両1の動作を説明するタイムチャートである。図7には、加速指示部131の出力とエンジン20の回転速度が示されている。エンジン20の回転速度(縦軸)及び時間(横軸)のスケールは、見やすさのため、図1のパート(b)に示すチャートよりも拡大されている。
この結果、エンジン20は、高速慣性力走行の期間、触媒91の温度を触媒の活性下限温度よりも高くするように動作する。
加速指示に応じて高速慣性力走行が終了する際、エンジン20が加速のための動作を開始する前に、排ガス浄化装置90が、エンジン20の排ガスを適切に浄化できる状態にある。従って、高速慣性力走行が終了した後の排ガスの浄化を可能としつつ、高速慣性力走行中に発生する音及び振動を低減することができる。
2 フレーム
3 ハンドルバー
4 ステップ
20 エンジン
24 クランクシャフト
30 始動発電機
40 アクチュエータ駆動式シーケンシャル多段変速装置
41 シフトアクチュエータ
42 シーケンシャル変速機
50 アクチュエータ駆動式クラッチ
51 クラッチアクチュエータ
52 摩擦クラッチ
60 動力伝達経路
80 制御装置
90 排ガス浄化装置
91 触媒
131 加速指示部
Claims (6)
- リーン車両であって、
前記リーン車両は、
フレームと、
前記フレームに取付けられ、前記リーン車両の運転者に把持されるハンドルバーと、
前記フレームに取付けられ、前記運転者の足を載せるステップと、
少なくとも一部が前記リーン車両の外部に露出するように前記フレームに取付けられたエンジンと、
シーケンシャル変速機及びシフトアクチュエータを有し、前記シーケンシャル変速機は高速段群又は低速段群に属する多段のギア段を有し1つのシフト動作毎にギア段を1段増加又は減少し、前記高速段群は、前記シーケンシャル変速機が8段変速タイプの場合における8から5速であり、7段変速タイプの場合における7から4速であり、6段変速タイプの場合における6から4速であり、5段変速タイプの場合における5から3速であり、そして、4段変速タイプの場合における4から3速であり、前記シフトアクチュエータは前記シーケンシャル変速機を駆動してシフト動作させる、アクチュエータ駆動式シーケンシャル多段変速装置と、
摩擦クラッチ及びクラッチアクチュエータを有し、前記摩擦クラッチは前記エンジンと前記シーケンシャル変速機との間の動力伝達経路に設けられ前記動力伝達経路を接続状態又は切断状態に切替え、前記クラッチアクチュエータは前記摩擦クラッチを駆動する、アクチュエータ駆動式クラッチと、
前記リーン車両への加速指示又は非加速指示を出力する加速指示部と、
前記シーケンシャル変速機のギア段が前記高速段群に属し、且つ、前記リーン車両が走行状態において、前記加速指示部によって前記非加速指示が出力された場合、高速慣性力走行を実行し、少なくとも前記高速慣性力走行の期間、前記シフトアクチュエータに前記シーケンシャル変速機のギア段を前記高速段群に維持させるように、前記アクチュエータ駆動式シーケンシャル多段変速装置、前記アクチュエータ駆動式クラッチ及び前記エンジンを制御し、前記高速慣性力走行は、前記摩擦クラッチが前記クラッチアクチュエータにより前記切断状態にされ且つ前記エンジンがアイドリング動作状態又は停止状態である状態で前記運転者が前記ハンドルバーを把持し且つ前記ステップに足を載せて前記リーン車両を操作することによって実行される制御装置と、
を備えるリーン車両。 - 請求項1に記載のリーン車両であって、
前記制御装置は、前記高速慣性力走行の期間に前記加速指示部から前記加速指示が出力された場合、前記エンジンを前記加速指示に応じた動作状態にするとともに、前記クラッチアクチュエータに前記摩擦クラッチを接続状態に変更させる
リーン車両。 - 請求項2に記載のリーン車両であって、
前記リーン車両は、
前記制御装置は、前記加速指示部から前記加速指示が出力された場合、前記シフトアクチュエータに前記シーケンシャル変速機を、前記高速段群のうちの前記加速指示に応じたギア段にさせた後、前記クラッチアクチュエータに前記摩擦クラッチを接続状態に変更させるとともに前記エンジンを前記加速指示に応じた動作状態にする
リーン車両。 - 請求項2又は3に記載のリーン車両であって、
前記リーン車両は、
前記エンジンのクランクシャフトに対し固定された速度比で回転するよう前記クランクシャフトと接続され、前記エンジンの始動時に前記クランクシャフトを駆動し、前記エンジンの燃焼動作時に前記エンジンに駆動されて発電する始動発電機を備え、
前記制御装置は、前記クラッチアクチュエータに前記摩擦クラッチを接続状態に変更させるよりも前に、前記始動発電機に前記クランクシャフトを駆動させる
リーン車両。 - 請求項1から4何れか1に記載のリーン車両であって、
前記制御装置は、前記高速慣性力走行の期間における前記エンジンの回転速度が、前記フレームに取付けられた前記ハンドルバーの共振周波数帯に対応する前記エンジンのハンドル共振速度帯、及び、前記フレームに取付けられた前記ステップの共振振動周波数帯に対応する前記エンジンのステップ共振速度帯を避けるように、前記エンジンを制御する
リーン車両。 - 請求項1から5何れか1に記載のリーン車両であって、
前記リーン車両は、前記エンジンの排ガスを浄化する触媒を有し前記エンジンと接続された排ガス浄化装置を備え、
前記制御装置は、前記高速慣性力走行の期間における前記エンジンの回転速度が、前記エンジンからの排ガスによって前記触媒の温度を前記触媒の活性下限温度よりも高くする回転速度となるように、前記エンジンを制御する
リーン車両。
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