Patent classifications
B60K2025/026
ELECTRIC POWER TAKE-OFF FOR A REFUSE VEHICLE
- Jeffrey Koga ,
- Emily Davis ,
- Jerrod Kappers ,
- Vince Schad ,
- Robert S. Messina ,
- Christopher K. Yakes ,
- Vincent Hoover ,
- Clinton T. Weckwerth ,
- Zachary L. Klein ,
- John Beck ,
- Brendan Chan ,
- Skylar A. Wachter ,
- Nader Nasr ,
- Chad K. Smith ,
- Logan Gary ,
- Derek A. Wente ,
- Shawn Naglik ,
- Mike J. Bolton ,
- Jacob Wallin ,
- Quincy Wittman ,
- Christopher J. Rukas ,
- Dylan Hess ,
- Jason Rice ,
- Zhenyi Wei ,
- Bashar Amin ,
- Catherine Linsmeier ,
- Joshua D. Rocholl ,
- Dale Matsumoto
A refuse vehicle includes a chassis, a first energy storage device, a body, an electric power take-off system, and a subsystem coupled to the body and moveable using hydraulic power from the electric power take-off system. The first energy storage device (e.g., a battery) is supported by the chassis and is configured to provide electrical power to a prime mover. Activation of the prime mover selectively drives the refuse vehicle. The body is configured for storing refuse, and is supported by the chassis. The electric power take-off system is positioned on the body and includes an electric motor, a second energy storage device configured to provide electric power to the electric motor, and a hydraulic pump that is drive by the electric motor. The electric motor drives the hydraulic pump to convert the electrical power into hydraulic power.
System and method for electronic power take-off controls
- Jeffrey Koga ,
- Emily Davis ,
- Jerrod Kappers ,
- Vince Schad ,
- Robert S. Messina ,
- Christopher K. Yakes ,
- Vincent Hoover ,
- Clinton T. Weckwerth ,
- Zachary L. Klein ,
- John Beck ,
- Brendan Chan ,
- Skylar A. Wachter ,
- Nader Nasr ,
- Chad K. Smith ,
- Logan Gary ,
- Derek A. Wente ,
- Shawn Naglik ,
- Mike J. Bolton ,
- Jacob Wallin ,
- Quincy Wittman ,
- Christopher J. Rukas ,
- Dylan Hess ,
- Jason Rice ,
- Zhenyi Wei ,
- Bashar Amin ,
- Catherine Linsmeier ,
- Joshua D. Rocholl
A refuse vehicle includes a battery configured to provide electrical energy to drive at least one of a plurality of wheels, a vehicle body supported by the chassis and defining a receptacle for storing refuse therein, and an electric power take-off system including a motor configured to power to a hydraulic system in response to receiving the electrical energy from the battery, an inverter configured to provide the electrical energy to the motor from the battery, a sensor configured to detect thermal energy within the inverter, and a controller configured to receive data from the sensor, wherein the controller is further configured to determine if the data from the sensor is greater than a critical operating condition and reduce a rate of electrical energy supplied to the motor in response to determining that the data from the sensor is greater than the critical operating condition.
Working vehicle
A working vehicle includes a first hydraulic pump (e.g., a variable displacement pump) with a delivery flow rate controlled by load sensing control, a second hydraulic pump (e.g., a fixed displacement pump), at least one working-machine-related control valve to control at least one working-machine-related hydraulic actuator, a power shift valve to control at least one traveling-power-transmission-related hydraulic actuator, and a power steering controller to control a steering-related hydraulic actuator. The at least one working-machine-related control valve is provided in a first hydraulic system supplied with hydraulic fluid by the first hydraulic pump, and at least one of the power shift valve or the power steering controller is provided in a second hydraulic system supplied with hydraulic fluid by the second hydraulic pump.
Work vehicle and method for controlling same
A work vehicle is equipped with an engine, a hydraulic pump, a work implement, a travel device, an accelerator operating member, a work implement operating member, and a control unit. The hydraulic pump is driven by the engine. The work implement is driven by hydraulic fluid discharged from the hydraulic pump. The travel device is driven by the engine. The accelerator operating member changes the engine rotation speed. The work implement operating member operates the work implement. The control unit causes the speed of the work implement to increase by causing the engine rotation speed to increase when an operation amount of the work implement operating member is increased.
Work vehicle having a work implement
A work vehicle is equipped with an engine, a hydraulic pump, a work implement, a work implement operating member, a work implement control valve, a capacity control device, a travel device, an accelerator operating member, and a control unit. The hydraulic pump is driven by the engine. The work implement is driven by hydraulic fluid discharged from the hydraulic pump. The work implement control valve controls the hydraulic pressure supplied to the work implement. The capacity control device controls a differential pressure between a discharge pressure of the hydraulic pump and an outlet hydraulic pressure of the work implement control valve. The travel device is driven by the engine. The accelerator operating member changes the engine rotation speed. The control unit causes the speed of the work implement to increase by causing the engine rotation speed to increase when an operation amount of the work implement operating member is increased.
Work vehicle and method of controlling work vehicle
A power transmission includes first and second clutches for switching a transmission path for a driving force therein. A clutch controlling unit provided for a work vehicle is configured to switch the transmission path from one to the other of first and second modes when a speed ratio parameter reaches a mode switching threshold. The clutch controlling unit is configured to keep setting the transmission path in the other mode even when the speed ratio parameter again reaches the mode switching threshold until a switching prohibition period having a predetermined initial value expires as long as a period of time elapsed after mode switching is included in the switching prohibition period. A trigger detecting unit provided for the work vehicle is configured to make the switching prohibition period expire when detecting a predetermined operation in the switching prohibition period.
TRANSMISSION DEVICE AND METHOD FOR OPERATING THE SAME
A power-split transmission device for a vehicle, which connects a drive engine to a drive output, having a hydrostatic unit for continuous adjustment of the transmission ratio at a transmission unit, and two range clutches that alternately operate for respectively associated driving ranges with different transmission ratios. A control unit, during regular vehicle deceleration, implements the driving range change from a first range, with higher transmission ratios, to a second range, with lower transmission ratios, by switching from the first to the second range clutch in accordance with a synchronous point dependent deceleration control logic. In the special case of an unexpected increase of the deceleration dynamic at the beginning of an already initiated driving range change from the first to the second driving range, the control unit immediately forces the change by bypassing the synchronous point dependent deceleration control logic when other boundary conditions are fulfilled.
POWER SPLIT TRANSMISSION AND METHOD FOR OPERATING SUCH POWER SPLIT TRANSMISSION
A power-split transmission which is designed to be operated with either first or second deceleration logics. The second deceleration logic has a higher deceleration dynamic than the first deceleration logic, and is designed to disengage an engaged range clutch immediately so as to reduce the transmission ratio by way of a hydrostatic unit with a maximum dynamic. A method of operating the transmission includes: monitoring various vehicle parameters while the vehicle is operated with the first deceleration logic; detecting that at least one set limit value has been exceeded while the vehicle operated with the first deceleration logic; activating the second deceleration logic, to immediately disengage an engaged range clutch; reducing a transmission ratio to a maximum using the hydrostatic unit, the hydrostatic unit being displaced with a maximum dynamic; and engaging the range clutch and activating the first deceleration logic.
Work vehicle and control method for same
A work vehicle includes a control unit having a motor switch control unit and a motor command determining unit. The motor switch control unit controls a motor switching mechanism so that a third motor connects to a first motor when a first rotation speed is less than a second rotation speed. The first rotation speed is the rotation speed of the first motor corresponding to that of a rotating shaft of the third motor. The second rotation speed is the rotation speed of the second motor corresponding to that of a rotating shaft of the third motor. When the third motor is connected to the first motor, the motor command determining unit determines a command torque for the first motor and the third motor so that the command torque for the third motor is no more than the command torque for the first motor.
WORK VEHICLE HAVING A WORK IMPLEMENT
A work vehicle is equipped with an engine, a hydraulic pump, a work implement, a work implement operating member, a work implement control valve, a capacity control device, a travel device, an accelerator operating member, and a control unit. The hydraulic pump is driven by the engine. The work implement is driven by hydraulic fluid discharged from the hydraulic pump. The work implement control valve controls the hydraulic pressure supplied to the work implement. The capacity control device controls a differential pressure between a discharge pressure of the hydraulic pump and an outlet hydraulic pressure of the work implement control valve. The travel device is driven by the engine. The accelerator operating member changes the engine rotation speed. The control unit causes the speed of the work implement to increase by causing the engine rotation speed to increase when an operation amount of the work implement operating member is increased.