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公开(公告)号：US20220324451A1
公开(公告)日：2022-10-13
申请号：US17642746
申请日：2019-10-24
发明人： JAN VAN DEN BERG
摘要： A system is provided for controlling engine fueling and includes an internal combustion engine, a fuel source, means for delivering fuel from the fuel source to the engine, and a controller configured to control the fuel delivering means according to a first operational mode so that, upon attaining a predetermined operational state of the engine, an amount of fuel delivered to the engine per unit time is kept constant. The system will typically but not necessarily be provided in a vehicle such as a truck or a passenger automobile. A method for controlling engine fueling is also provided.
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公开(公告)号：US20220252152A1
公开(公告)日：2022-08-11
申请号：US17667222
申请日：2022-02-08
IPC分类号： F16H61/682 , F16H59/40 , B63H23/06 , F16H59/74
摘要： A method for shifting a multi-speed transmission of a marine propulsion device between a first gear and a second gear each configured to transmit torque from a powerhead to a transmission output shaft. The method includes determining an actual power level requested for operating the marine propulsion device and measuring a transmission output shaft speed in which the transmission output shaft is rotating. The method further includes comparing the actual power level to a shift threshold, the shift threshold corresponding to expected power levels for operating the marine propulsion device as a function of the transmission output shaft speed of the transmission output shaft. The method further includes controlling the multi-speed transmission to shift when the actual power is outside the shift threshold.
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公开(公告)号：US20220252149A1
公开(公告)日：2022-08-11
申请号：US17667243
申请日：2022-02-08
IPC分类号： F16H61/16 , F16H61/684 , F16H59/74 , B63H23/02
摘要： A method for shifting a marine propulsion device transmission between first and second gears transmitting torque from a powerhead with a redline RPM. The transmission has a transition time for completing a shift. The method includes measuring an RPM of the powerhead, comparing the RPM to a first threshold, and starting a timer when the RPM exceeds the first threshold. The method includes measuring the RPM of the powerhead after the first threshold is exceeded, comparing the RPM to a second threshold, stopping the timer when the RPM exceeds the second threshold, determining an elapsed time between starting and stopping the timer, and determining a shift RPM based on the determined elapsed time, the redline RPM, and the transition time of the transmission. The method includes controlling the transmission to shift when the RPM measured for the powerhead reaches the shift RPM such that shifting completes before the redline RPM.
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公开(公告)号：US20220154822A1
公开(公告)日：2022-05-19
申请号：US17607079
申请日：2020-05-11
发明人： Dai ARAI , Shinji MISAWA , Yukio YOKOGAWA , Asuka ITO
IPC分类号： F16H61/16 , B62J45/415 , F16H59/50 , F16H59/48 , F16H59/74
摘要： A motorcycle includes a transmission, a first measuring unit, a second measuring unit, and a controller. The transmission is configured to automatically shift gears between a driving shaft and a driven shaft to transmit power from the driving shaft to the driven shaft. The first measuring unit is configured to measure the magnitude of a roll angle of a vehicle body. The second measuring unit is configured to measure the angular velocity of the roll angle of the vehicle body. The controller is configured to inhibit the transmission from shifting gears, based on the magnitude and the angular velocity of the roll angle. This configuration provides a motorcycle that enables gear shift control with more detailed response to a situation of a vehicle body.
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公开(公告)号：US20220034069A1
公开(公告)日：2022-02-03
申请号：US17276936
申请日：2019-10-31
申请人： KOMATSU LTD.
发明人： Akira NAKASHIMA
IPC分类号： E02F9/22 , E02F9/20 , F16H59/74 , F16H61/431 , F16H59/44 , F16H61/465
摘要： A hydraulic pump is driven by an engine. A hydraulic motor is driven by hydraulic fluid discharged from the hydraulic pump thereby causing a vehicle to travel. A controller controls a rotation speed of the engine and a displacement of the hydraulic pump. The controller acquires a tractive force of the vehicle. The controller changes the rotation speed of the engine to a low speed side in accordance with a reduction in the tractive force.
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公开(公告)号：US11149842B2
公开(公告)日：2021-10-19
申请号：US16945982
申请日：2020-08-03
发明人： Takuya Matsumoto , Akihiro Katayama , Yuki Ikejiri
摘要： A transmission ratio controller includes circuitry including a transmission ratio calculator and a monitor. The transmission ratio calculator calculates a transmission ratio using a first transmission ratio map when a specified parameter satisfies a first condition, and using a second transmission ratio map when the specified parameter satisfies a second condition. When the specified parameter satisfies the first condition, the internal combustion engine is in a first state. When the specified parameter satisfies the second condition, the internal combustion engine is in a second state. In the first state, the monitor calculates a hypothetical transmission ratio using the second transmission ratio map based on the second state. On a condition that the transmission ratio calculated in the first state differs from the hypothetical transmission ratio by a predetermined reference value or greater, the monitor determines that the transmission ratio has a possibility of differing in accordance with the specified parameter.
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公开(公告)号：US20210277993A1
公开(公告)日：2021-09-09
申请号：US17189416
申请日：2021-03-02
发明人： Kohei ITO
摘要： A control apparatus for a vehicle that includes an engine; a transmission; a damper and a clutch. The transmission has a gear ratio that is variable in a range including a torque-fluctuation insufficient absorption region in which a damper spring of the damper is elastically deformed to a certain maximum limit when a misfire occurs in the engine. The control apparatus includes: a misfire determination portion configured to determine occurrence of the misfire in the engine; and a misfire-case shift control portion configured, upon determination of the occurrence of the misfire in the engine by the misfire determination portion when the gear ratio of the transmission is in the torque-fluctuation insufficient absorption region, to cause the transmission to execute a shift-down action such that the gear ratio becomes higher than a higher threshold value of the torque-fluctuation insufficient absorption region.
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公开(公告)号：US20210215246A1
公开(公告)日：2021-07-15
申请号：US17059728
申请日：2019-05-31
发明人： Zhiyuan SHEN , Philip·Thomas HARRIS , Haoyong LV , Peng JIA , Wenjian LIU
摘要： A method for controlling gear shifting, including: acquiring a current gear-shifting parameter of the vehicle (101); according to the current gear-shifting parameter and a preset target rotational speed, determining a gear-shifting inputted rotational speed (102); and when a rotational speed of the vehicle reaches the gear-shifting inputted rotational speed, controlling a shifting fork to start up a gear-shifting operation (103). The method for controlling gear shifting presets the target rotational speed of the gears, and, according to the current gear-shifting parameter of the vehicle that is acquired in real time and the preset target rotational speed, inversely calculates the gear-shifting inputted rotational speed, whereby the gear-shifting inputted rotational speed is an accurate gear-shifting inputted rotational speed that matches with the current condition of the vehicle. When the rotational speed of the vehicle reaches the gear-shifting inputted rotational speed, the shifting fork is controlled to start up a gear-shifting operation, which can realize the accurate gear shifting of the vehicle, which greatly improves the stability of the vehicle when a dual-clutch automatic transmission is performing gear shifting.
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公开(公告)号：US10995853B2
公开(公告)日：2021-05-04
申请号：US16613095
申请日：2018-05-10
申请人： ISUZU MOTORS LIMITED
摘要： A vehicle control device includes: a travel section determination unit configured to determine a forward travel section that is a travel section having a different road gradient from a current travel section in which a vehicle is currently traveling and that is ahead in a travel direction of the vehicle; a forward gear stage selection unit configured to select a forward gear stage which is a gear stage of the vehicle in the forward travel section; and a shift control unit configured to, in a case where the selected forward gear stage is lower by two or more stages than the current gear stage which is a gear stage of the vehicle in the current travel section and when the vehicle is positioned within a predetermined range from a start position of the forward travel section, perform downshift from the current gear stage to the forward gear stage.
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10.发明授权公开(公告)号：US10598276B2
公开(公告)日：2020-03-24
申请号：US16237911
申请日：2019-01-02
发明人： Jessica Anderson , John A. Byerly
摘要： A system and method of controlling the operation of a transmission using fuel consumption data. The system and method includes controlling the operation of a vehicle transmission which is operatively connected to an engine having operating characteristics and operatively connected to a transmission control module having access to a memory. Fuel consumption data for an engine is converted to engine efficiency loss data representative of the engine operating. A set of equations is determined to provide a pattern representative of the operating characteristics the engine. A transmission controller using the pattern determines a prospective operating condition of the transmission to provide fuel efficient operation of the engine.
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