Patent classifications
B60Y2200/41
TRACK SPEED COMPENSATION FOR ENGINE SPEED DROOP
A system and method for compensating reduced track speed because of engine droop for a work machine is disclosed. The system may comprise a frame, an attachment coupled to the frame, a ground-engaging mechanism adapted to support the frame, an engine, a motor, a track speed sensor, an engine speed sensor, and a controller. The engine may drive the ground-engaging mechanism and attachment. The engine may be coupled through a variable speed transmission to the ground-engaging mechanism and the attachment. They variable speed transmission may include a hydrostatic circuit. The controller may be adapted to send an increased transmission command signal based on a drop in the engine speed signal when the work machine engages an increased load. The increased transmission command signal may increase a motor speed to cause an increase in track speed to compensate at least a portion of the reduced track speed from the engine speed droop.
TRANSMISSION SUBASSEMBLY, CLUTCH MODULE AND VEHICLE
A transmission subassembly for a working vehicle includes an engageable front wheel drive, a transmission housing, a clutch module, and a hydraulic module. The hydraulic module is received between the clutch module and the transmission housing.
Work vehicle and control method for work vehicle
A work vehicle includes an engine, a hydrostatic transmission, a storage device storing leakage flow rate data defining a relationship between a differential pressure of hydraulic fluid between the first drive circuit and the second drive circuit and a leakage flow rate of the hydraulic fluid in the hydraulic circuit in stalling, and a controller in communication with the storage device. The hydrostatic transmission includes a traveling pump, a hydraulic circuit with first and second drive circuits, and a traveling motor. The controller is configured to determine a target traction force of the work vehicle, determine a target differential pressure that is a target value of the differential pressure from the target traction force, determine the leakage flow rate from the target differential pressure with reference to the leakage flow rate data, and determine a target flow rate of the traveling pump from the leakage flow rate.
DISPLAY DEVICE, SHOVEL, INFORMATION PROCESSING APPARATUS
A display device displays information image related to an excavation work, in an ambient environment image in a view of a work area or an attachment viewed from a shovel, or in a field of view of an operator viewing the work area or the attachment from the shovel. The shovel may include the display device. A management device may include a display apparatus, a communication device which communicates with the shovel, and a remote control device operated by a user to remotely control the shovel via the communication device.
RIB-LESS HOIST STRUCTURE FOR TRUCK BODY
A hoist structure for a body of a truck can be comprised of a hoist plate arrangement extending in a first direction and configured to be rotatably coupled to a hoist member of the truck; and a plurality of external gussets spaced from each other in the first direction and extending in a second direction perpendicular to the first direction. Each of the external gussets can interface with the hoist plate arrangement, and a portion of each of the external gussets can extend in the second direction from a first side of the hoist structure arrangement.
AXLE ASSEMBLY HAVING AN ELECTRIC MOTOR MODULE AND METHOD OF MANUFACTURE
An axle assembly and a method of manufacture. The axle assembly may include a differential carrier and a bearing support wall. The differential carrier may be made of a first material. The bearing support wall may be mounted to the differential carrier and may be made of a second material. The second material may have a greater stiffness than the first material.
BI-DIRECTIONAL MULTI-SPEED DRIVE
A bi-directional drive assembly for a work vehicle has a reaction member fixed with respect to or a part of a drive housing. A driveshaft is rotatable about a drive axis relative to the reaction member in a first rotation direction and alternatively in a second rotation direction. A planetary set is coupled to the drive shaft and configured to rotate an output hub in the first or second rotation direction. A clutch assembly is coupled to the reaction member and includes a first clutch and a second clutch. The first clutch is configured to interface the planetary set with the reaction member to effect a first rotation speed of the output hub in the first rotation direction and alternatively the second rotation direction. The second clutch is configured to interface the planetary set with the reaction member to effect a second rotation speed of the output hub in the first rotation direction and alternatively the second rotation direction. An actuator arrangement is configured to effect movement of the first clutch and the second clutch along the drive axis to selectively engage the planetary set.
SYSTEM AND METHOD TO SHIFT TRANSMISSION IN MACHINES
A method for shifting a transmission in a machine. The method includes detecting a request for a directional shift of the transmission and determining a ground speed of the machine in response to the request. The method further includes overriding the request if the ground speed is above a ground speed threshold. Further, the method includes preparing the machine for the directional shift by limiting an output speed of a power source of the machine and by issuing a command to a brake unit of the machine to reduce the ground speed of the machine. Furthermore, the method includes validating and raising the request to the transmission to execute the directional shift if the ground speed is below the ground speed threshold.
WORK VEHICLE
A work vehicle includes a vehicle body provided with an engine, a work device provided for the vehicle body and including an actuator supplied with working fluid from a hydraulic pump drivable by the engine, an acceleration setter to set a rotational speed of the engine, and a control lever to operate a control valve for to control the working fluid from the hydraulic pump. The work vehicle also includes an acceleration adjuster that is located at such a position as to be operable with use of a thumb of a hand on a grip portion of a projecting end of the control lever and that allows the rotational speed of the engine to increase in preference to the setting by the acceleration setter.
Working machine
A working machine includes a machine body, a prime mover, a traveling device mounted on the machine body, a traveling motor to provide a power to the traveling device and to switch between a first speed and a second speed higher than the first speed, a traveling pump to be driven by the prime mover and to supply operation fluid to the traveling motor, and a controller device including an automatic shifter to automatically shift the traveling motor to the first speed or to the second speed, a timer to count an elapsed time from the automatically shifting, and a shift prohibitor to prohibit the automatically shifting by the automatic shifter when the elapsed time counted by the timer is less than a threshold.