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| Number | Title | Issue Date |
| 8056331 | Pump torque controller of hydraulic working machine To permit a precise and easy adjustment of a pump absorption torque of a main pump in accordance with environmental conditions when a sub-pump different in characteristics from the main pump is connected to a prime mover. A main controller 12 includes a proce... | 11/15/2011 |
| 8051653 | Velocity-pressure control apparatus of hydraulic machine A velocity-pressure control apparatus of a hydraulic machine includes a pressure command generator, a pressure sensor, a pressure controller, a velocity command generator, a velocity limiter, a switch, a comparator, a velocity sensor, and a motor driver. The pressur... | 11/08/2011 |
| 7891182 | Work machine, control system and method for controlling an engine in a work machine A method for controlling an engine in a work machine includes determining a base engine operating limit; determining a hydraulic system load on the engine; calculating a modification value for the base engine operating limit; generating a modified engine operating l... | 02/22/2011 |
| 7845168 | Method for controlling a powertrain A method for controlling a powertrain is disclosed. The powertrain includes a work arrangement, an engine for providing power to the work arrangement, and a transmission for transmitting power from the engine to the work arrangement. The method includes determining ... | 12/07/2010 |
| 7832208 | Process for electro-hydraulic circuits and systems involving excavator boom-swing power management A method of controlling an electro-hydraulic system having an engine driving a variable displacement pump, a hydraulic valve and a hydraulic actuator in order to achieve more efficient engine operation is disclosed. The pressures in the electro-hydraulic system are ... | 11/16/2010 |
| 7810323 | Load control device for engine of work vehicle A device for use in a work vehicle such as a wheel loader, capable of reliably preventing engine stall due to rapid application of high hydraulic load, without causing problems such as deterioration in fuel efficiency or vehicle performance and waste of energy. When... | 10/12/2010 |
| 7797934 | Anti-stall system utilizing implement pilot relief A hydraulic control system for a machine is disclosed. The hydraulic control system may have a source driven by an engine to pressurize fluid, and a tool actuator movable by pressurized fluid. The hydraulic control system may further have a first valve element movab... | 09/21/2010 |
| 7797935 | Hydraulic drive device for dump truck A hydraulic drive system is provided with a generator 8 for outputting electricity corresponding to a rotation speed of an engine 7, an electric motor 11 drivable responsive to the electricity from the generator 8, hydraulic pumps 12 | 09/21/2010 |
| 7757486 | Engine control device for work vehicle An engine control device for a work vehicle includes a hydraulic pump driven by an engine, a hydraulic actuator driven with pressure oil supplied from the hydraulic pump, a drive disallower for disallowing drive of the hydraulic actuator with the pressure oil suppli... | 07/20/2010 |
| 7716926 | Control apparatus for engine-powered forklifts Disclosed herein is a control apparatus for an engine-powered forklift. The control apparatus of the present invention includes a mode detecting means for detecting whether the forklift is in a traveling mode or a working mode, and a controller, which controls the e... | 05/18/2010 |
| 7661266 | Method for braking a vehicle driven by means of a hydrostatic gearbox and also a hydrostatic drive The invention relates to a method for braking a vehicle, driven by means of a hydrostatic gearbox (28) and a hydrostatic drive. The hydrostatic gearbox (28) comprises at least one adjustable hydrostatic motor (6,6). The vehicle driven by means o... | 02/16/2010 |
| 7607296 | Device and method of controlling hydraulic drive of construction machinery In construction machinery, control is conducted to keep a work machine to operate at a constant speed regardless of the operation thereof. Different engine output lines T0-T3 and pump torque lines M1-M4 are defined for different operation... | 10/27/2009 |
| 7596945 | Load control device for engine of work vehicle A load control device for an engine of a work vehicle that purposes to render the work vehicle, such as a wheel loader or the like, capable of raising a vehicle speed in a short period of time by providing a sufficient traction force when a high traveling load is im... | 10/06/2009 |
| 7584611 | Control system for hydraulic construction machine When a mode selection command selects an economy mode, a mode selector 700e is turned on and outputs an engine revolution speed modification value ΔN0 (ΔN1=ΔN0) computed by an engine-revolution-speed modification value computing... | 09/08/2009 |
| 7543447 | Control system for traveling working vehicle A traveling working vehicle maintains fuel economy while ensuring a sufficient work rate in heavy-load work. A torque control regulator 26 controls the absorption torque of a hydraulic pump 22 to ensure that it does not exceed a preset maximum a... | 06/09/2009 |
| 7441407 | Hydraulic drive control device A hydraulic drive control device which is capable of translating the effect of oil pressure loss reduction into the effect of fuel consumption reduction that is very real to the user. The hydraulic drive control device has (i) a driving hydraulic circuit for driving... | 10/28/2008 |
| 7416045 | Dual hydraulic machine transmission The modular transmission uses only a pair of small and light hydraulic machines of remarkably improved volumetric efficiency with pistons having body portions substantially as long as the axial length of the respective cylinders in which they reciprocate. The two hy... | 08/26/2008 |
| 7398648 | Travel control device for hydraulically driven vehicle and hydraulically driven vehicle The present invention includes a hydraulic pump 10 driven by a prime mover 1, a traveling motor 12 driven with pressure oil delivered from the hydraulic pump 10, a control valve 11 for traveling that controls a flow rate of the pre... | 07/15/2008 |
| 7389641 | System for and method of operating a pressurized air source of a vehicular agricultural applicator A system configured to drive a fan of an agricultural applicator is provided. The fan is mounted on a wheeled chassis assembly propelled via a drive train by an engine in a forward direction of travel. The system includes a hydraulic pump mechanically driven by the ... | 06/24/2008 |
| 7370475 | Traveling hydraulic working machine A modification torque ΔT and a torque converter speed ratio e is computed from input and output revolution speeds of a torque converter 31. A first determination coefficient α corresponding to the speed ratio e, and a second determination coefficient β cor... | 05/13/2008 |
| 7357202 | User input for vehicle control A user input for controlling acceleration of a vehicle. The user input has a movable member capable of deflection by a user such that a degree of deflection corresponds to a specified velocity commanded by the user. The correspondence between the degree of deflectio... | 04/15/2008 |
| 7353649 | Hydraulic pressure supply control in industrial vehicle A priority flow rate control valve (30) distributes pressurized working oil discharged from a hydraulic pump (10) driven by an electric motor (11) to a power steering device (20) first, and distributes the residual pressurized working oil... | 04/08/2008 |
| 7353651 | De-stroking dual hydrostatic pump A zero turning radius mower has a dual hydrostatic pump with right and left pump arms. A linkage between the pump arms and a pair of control levers destrokes both sides of the pump simultaneously if engine speed drops below a specified value. The linkage allows each... | 04/08/2008 |
| 7341124 | Driving operation device A driving operation device includes an input portion which inputs an amount of operation by the driver, an output portion to which the amount of operation is transmitted and a form modifying portion which modifies an orientation of the input portion based on an outp... | 03/11/2008 |
| 7320217 | Load controller for hydrostatic transmission in work vehicles Disclosed is a load controller for use in a hydrostatic transmission for a work vehicle. Power supplied from an engine is branched to drive an implement system and a traveling system. The hydrostatic transmission connects, in an oil-hydraulic closed circuit, an oil-... | 01/22/2008 |
| 7318463 | Self-propelling crusher A self-propelled crushing machine comprises a crushing device 20; a hydraulic drive system including a crushing device hydraulic motor 21 for driving the crushing device 20, a first hydraulic pump 62 for driving the crushing device hydrau... | 01/15/2008 |
| 7316113 | Control device for a work machine hydraulic pump used in a work vehicle A control device for a work machine hydraulic pump used on a work vehicle according to the present invention has an object to rapidly accelerate the engine to start the vehicle quickly and to rapidly produce a large tractive force when an operator starts depressing ... | 01/08/2008 |
| 7310943 | Hydrostatic transmission controls with alternative operating modes A hydrostatic transmission on a tractor is operated by a microcontroller providing current commands to the hydrostatic transmission pump, and manual controls that provide signals to the microcontroller so the current commands cause the hydrostatic transmission to op... | 12/25/2007 |
| 7311180 | Disk brake An electromechanically actuatable self-boosting disk brake in which a friction brake lining is guided displaceably with a guide whose angle to the brake disk is adjustable via an electric motor to attain brake reinforcement. The angle of the guide is adjusted indepe... | 12/25/2007 |
| 7287620 | Method and apparatus for controlling the speed ranges of a machine A method and apparatus of a work machine wherein an operator traverses the work machine within an operator selected speed range. The operator positions a speed-range control device to select the operator selected speed range, thus, sending a speed-range signal from ... | 10/30/2007 |
| 7281370 | Fan revolution speed control method Temperature of each cooling target fluid is detected. When the flow rate of a cooling target fluid passing through a cooling system is high, the fan revolution speed of a cooling fan of the cooling system is controlled to achieve a target fan revolution speed so tha... | 10/16/2007 |
| 7273441 | Work vehicle having a speed change arrangement A work vehicle, in accordance with the present invention, having a speed change arrangement comprising: front wheels and rear wheels; an engine supported by the front wheels and rear wheels; power train extending between the engine and at least the rear wheels, the ... | 09/25/2007 |
| 7269945 | Method for compensating flow rate at neutral position of operation lever of construction equipment A method for compensating a flow rate at a neutral position of an operation lever of construction equipment is adapted so that when RPM of an engine becomes different, an actuator can be identically driven according to an operating amount of the operation lever. The... | 09/18/2007 |
| 7255539 | Pump pressure limiting engine speed control A sprinkler system for building includes an internal combustion engine which operates a water pump. The water pump in turn forces water through pipes to sprinkler heads. The engine is at least in part controlled by a throttle control mechanism which includes a sprin... | 08/14/2007 |
| 7240487 | Throttle potentiometer adapter A throttle potentiometer adapter provides a direct connection between a pivot nut on a hand throttle linkage and the internal sleeve of a potentiometer. The potentiometer provides a voltage output to an electronic controller, the voltage output corresponding to the ... | 07/10/2007 |
| 7236096 | Slope detector In a dump truck where a monitoring system prevents the raising of the cargo bed when the level of lateral tilt exceeds a safe limit, a keyed switch allows for presetting the maximum safe degree of tilt by simple left or right manipulation of the switch, and to switc... | 06/26/2007 |
| 7234922 | Pump pressure limiting engine speed control and related engine and sprinkler system A sprinkler system for building includes an internal combustion engine which operates a water pump. The water pump in turn forces water through pipes to sprinkler heads. The engine is at least in part controlled by a throttle control mechanism which is responsive to... | 06/26/2007 |
| 7225615 | Method and a device for controlling a vehicle and a computer program for performing the method In method and a device for controlling a vehicle, the vehicle includes an engine arranged to drive at least one pair of half shafts and to drive at least one pump. The pump is arranged to supply a hydraulic system including at least a first hydraulic component with ... | 06/05/2007 |
| 7225059 | Method for operating a motor vehicle In a method for operating a vehicle having a drive, a value of an internal torque to be supplied by the drive is determined from a positive propulsion torque requested by a user or a control and/or regulating system and the drive is triggered accordingly. Furthermor... | 05/29/2007 |
| 7195209 | Aircraft high-lift system with overload protection The invention concerns an aircraft high-lift system with a drive system, components for transmitting the drive energy over the entire wing span to drive stations of individual segments of landing flap/slat flap systems, and with overload protection. According to the... | 03/27/2007 |
