摘要:
A regenerative drive system for heavy duty vehicles such as truck tractors having a conventional internal combustion engine and transmission includes a regenerative hydraulic motor and a transfer case. The transfer case has a chain drive coupling the output of the hydraulic motor to the input of a planetary gear speed reduction assembly. The output of the planetary gear assembly is provided to a modulating friction clutch pack which selectively couples the output of the planetary gear assembly to the transmission output and drives the differential and rear vehicle wheels.
摘要:
According to the inventive method, the rotational movement of the superstructure (28) of a heavy working machine is generated by an adjustable hydrostatic transmission (1) which is located in a closed hydraulic circuit (1-37). The braking of the superstructure is automatically achieved by counter-steering, once the control lever (4) is in a braking position. The counter-steering motion is created by a pivoting torque, set against the current rotational movement by a switching logic circuit. A revolution monitoring device (16) determines that the superstructure is stationary.
摘要:
The invention relates to a retarder (10), comprising a stator (12) and a rotor (14) which is rotationally mounted in said stator. The rotor (14) is coupled with the units (16) to be retarded, e.g. the drive train, gear shaft, motor shaft or similar. The retarder (10) is configured as a hydraulic retarder with a positive displacement circulation pump (18) with at least one pump chamber (20, 22). A controlled or regulated pressure valve (24) is allocated to said positive displacement circulation pump (18) on the delivery side. The retarder (10) is used preferably as an additional braking device, especially for vehicles such as heavy goods vehicles, automobiles or similar.
摘要:
A hydraulic pump/motor (110) having: a hydraulic chamber (112); a primary piston (114) for reciprocation in the hydraulic chamber and mechanically coupled to a connect rod; a slave piston (116) for reciprocation in the hydraulic chamber; a inlet/outlet port (119) for admitting and expelling hydraulic fluid to and from the hydraulic chamber; and a resilient mechanism (118) for, in conjunction with the slave piston, compensating for a difference between hydraulic fluid in the hydraulic chamber and a volume of the hydraulic chamber; wherein the primary piston and the slave piston reciprocate responsive to movement of the connect rod and to injection and discharge of the hydraulic fluid to and from the hydraulic chamber.
摘要:
A hydraulic pump/motor (110) having: a hydraulic chamber (112); a primary piston (114) for reciprocation in the hydraulic chamber and mechanically coupled to a connect rod; a slave piston (116) for reciprocation in the hydraulic chamber; a inlet/outlet port (119) for admitting and expelling hydraulic fluid to and from the hydraulic chamber; and a resilient mechanism (118) for, in conjunction with the slave piston, compensating for a difference between hydraulic fluid in the hydraulic chamber and a volume of the hydraulic chamber; wherein the primary piston and the slave piston reciprocate responsive to movement of the connect rod and to injection and discharge of the hydraulic fluid to and from the hydraulic chamber.
摘要:
A regeneration system (100) for use in a vehicle having a reciprocating-piston engine. The regeneration system (100) captures energy (e.g. braking energy), stores the energy, and subsequently uses the stored energy to generate motive power for the vehicle. The motive power can be generated in conjunction with motive power provided by the engine. The regeneration system (100) comprises a variable displacement pump/motor (110) that is connected to a connecting rod (940) in each cylinder (910) of the engine. The pump/motor (110) comprises a fluid chamber (112), a primary piston (114) mechanically coupled to the connecting rod (940) and a slave piston (116) coupled to the primary piston (114) via resilient means (118). A control unit (160) controls a plurality of valves (125, 140, 176, 135) to direct the exchange of pressurized hydraulic fluid between the pump/motor (110) and a hydraulic accumulator (150) in synchronous timing with the operation of the engine.
摘要:
A hydrostatic transmission comprising a hydraulic pump and a hydraulic motor fluidly connected with each other through a closed fluid circuit. Pistons (64) press against a control arm (39) connected with a movable swash plate (11) of the hydraulic pump and generate a friction force when the movable swash plate (11), which has been rotated slantwise, automatically returns toward the neutral position by a neutral return spring (31). The movable swash plate (11) gradually returns to the neutral position by pressure of the piston (64). A discharging oil hole (64c) is open at the utmost end of each of the pistons (64) for draining a portion of operating oil which operates the piston (64) in the closed fluid circuit to the interior of a housing (R1). Grooves (39d) are formed along a surface of the control arm (39) abutting against the pistons (64). When the movable swash plate (11) is rotated between the neutral position and a predetermined position, the discharging oil holes (64c) are connected to the interior of the housing (R1) through the grooves (39d) so as to release the oil pressure out of the closed fluid circuit. Thus, braking shock can be moderated and the neutral position can be expanded.
摘要:
Die Erfindung betrifft ein stufenloses Leistungsverzweigungsgetriebe, insbesondere für Kraftfahrzeuge, die sich besonders dadurch auszeichnet, daß das stufenlose Getriebe (HVG) eine komplette Baueinheit bildet, die nach Art der Modulbauweise in beliebige Gehäuseformen eines Gesamtgetriebes bzw. Triebwerkes einsetzbar ist. Das Getriebe (HVG) ist je nach Fahrzeugforderungen als hydrostatisch-mechanisches Leistungsverzweigungsgetriebe oder mechanisches Leistungsverzweigungsgetriebe mit unterschiedlicher Anzahl an Fahrbereichen für Vorwärts- und Rückwärtsfahrt ausführbar. Es kann als Standard-Getriebe für verschiedene Fahrzeugarten, wie z.B. Traktoren, Arbeitsmaschinen, Nutzkraftfahrzeuge oder Omnibusse u.a. eingesetzt werden. Eine weitere Einrichtung der Erfindung betrifft eine Retarder-Bremsanlage in verschiedenen Ausführungsformen, insbesondere für den Einsatz in Nutzkraftfahrzeugen und Omnibussen. Desweiteren sind Einrichtungen zur Verbesserung hinsichtlich Wirkungsgrad, Geräuschverhalten, Bauraum, Gewicht und Kosten sowie zur Verbesserung des Fahrkomforts u.a. enthalten.