Abstract:
Die Erfindung betrifft ein Hybridmodul (1) für einen Antriebsstrang (2) eines Kraftfahrzeugs, mit einem Gehäuse (3), einer in dem Gehäuse (3) gelagerten Eingangswelle (4) zum Einleiten eines von einer ersten Antriebsmaschine erzeugten Drehmoments, einem Rotorträger (5) zum Einleiten eines von einer zweiten Antriebsmaschine erzeugten Drehmoments, einer Trennkupplung (6) zum schaltbaren Drehkoppeln der Eingangswelle (4) mit dem Rotorträger (5), einer Kupplung (7) zum Drehkoppeln des Rotorträgers (5) mit einer Abtriebswelle (8), und mit einem hydraulischen Betätigungssystem (9) zum Betätigen der Trennkupplung (6), wobei das Betätigungssystem (9) einen Betätigungszylinder (10) und einen axial in dem Betätigungszylinder (10) verschieblich aufgenommenen Betätigungskolben (11) enthält, wobei der Betätigungszylinder (10) durch ein rotorträgerfestes Bauteil gebildet ist.
Abstract:
A clutch assembly (10) comprises a clutch cover (11), a pressure plate (12) mounted on the cover, spring means (13) biasing the pressure plate away from the cover and lever means (14) for releasing the clutch. A rotary actuator (15) is mounted on the cover, the actuator (15) comprising a first component (17) and a second component (18) relative rotation of which varies the effective length of the actuator to move the lever means. An actuator means (24) may be provided for causing relative rotation of the first and second components. In one embodiment the rotary actuator (15) does not rotate with the cover (11) and the actuator means comprises an electric motor (24) which rotates the second component relative to the first component. In further embodiments (see figures 4,5 and 6) the rotary actuator (15) rotates with the cover (11) and the actuator means tends to brake rotation of the second component to cause relative rotation of the first and second components.
Abstract:
Die Erfindung betrifft eine Kupplungsvorrichtung (1) für einen Antriebsstrang eines Fahrzeuges, mit einem ersten Kupplungsbestandteil (2) zur Drehmomenteinleitung und einem zweiten Kupplungsbestandteil (5) zur Drehmomentweitergabe, wobei der zweite Kupplungsbestandteil (5) rotatorisch von dem ersten Kupplungsbestandteil (2) abkoppelbar ist, wobei erste Reibelemente (4) des ersten Kupplungsbestandteils (2) und zweite Reibelemente (6,16) des zweiten Kupplungsbestandteils (5) drehmomentübertragend verbindbar sind. Dabei ist eine partielle Selbstverstärkung der Kupplungsvorrichtung 81) über eine Blattfedereinheit (8) ausführbar, während eine zweite Federeinheit (11) eine statische Anpresskraft ausübt; wobei die Blattfedereinheit (8) und die zweite Federeinheit (11) rotatorisch entkoppelt sind.
Abstract:
An exhaust brake (10) for an internal combustion engine is disclosed. The exhaust brake (10) includes a main valve (100) and a bypass valve (200) for restricting the flow of exhaust gas. The main valve (100) may be selectively closed, while the bypass valve (200) is biased into a closed position with a selective biasing force. Closing the main valve (100) may cause exhaust back pressure to build against the bypass valve (200) until the biasing force is overcome. When the biasing force is surpassed by the exhaust back pressure, the bypass valve (200) opens to relieve the back pressure. The bypass valve (200) closes when back pressure falls below the biasing force. The biasing force may be varied to operate the exhaust brake (10) at a maximum back pressure for a given engine speed and/or engine condition. A method of operating the exhaust brake (10) is also disclosed.
Abstract:
A torque transfer coupling includes first and second rotary members. A transfer clutch operatively connects the first and second rotary members. A piston, disposed in a piston chamber, is actuable to engage the transfer clutch. A hydraulic pump in fluid communication with a sump containing hydraulic fluid has a first pump member fixed for rotation with the first rotary member and a second pump member fixed for rotation with the second rotary member such that relative rotation between the first and the second pump members generates a fluid pumping action. A first flow path supplies hydraulic fluid from the hydraulic pump to the piston chamber. A second flow path supplies hydraulic fluid from the piston chamber to a control valve for regulating the pressure of the hydraulic fluid supplied to the piston chamber. The second flow path includes an aperture extending through the second pump member.
Abstract:
An electrical solenoid (10) operates a three-way valve (12) having a vent port (78), a port (68) connected to a source of high pressure hydraulic fluid and a port (54) connection to a pilot valve (16). A check valve (14) supplied from a source of low pressure hydraulic fluid is connected to the cylinder (82) of a clutch (24) or servo of an automatic transmission when a pilot valve (16) opens this communication upon energizing the solenoid coil. The clutch cylinder (82) is depressurized through the pilot valve (16) to the vent port (78) of the solenoid-operated valve (12).
Abstract:
The described system and method provide a continuously variable full range transmission (101) having inputs (102, 104) for receiving rotational power from a primary power source (103) and a secondary power source (105) such as a hydraulic variator (201). A first planetary gear group (402) contains first and second planetary gear sets (204, 205), and the inputs for receiving rotational power are linked to one or more of the first planetary gear set and the second planetary gear set. A second planetary gear group (403) includes a third planetary gear set (209) and a fourth planetary gear set (210), with a nested clutch assembly (404) having first and second selectable clutches (207, 208) being provided to link the first planetary gear group to the second planetary gear group. Activation of the first clutch fixes the continuously variable transmission in a first speed range, while activation of the second clutch fixes the continuously variable transmission in a second speed range.
Abstract:
A transmission for a vehicle including a hydrostatic regenerative braking system includes a first rotatable shaft having a first end adapted to be driven by a first prime mover and a second end adapted to be coupled to a vehicle driveline. A second shaft selectively drives the first shaft and is adapted to drive a hydraulic pump of a second prime mover. A planetary gearset includes a first member restricted from rotation, a second member and a third member. A transfer mechanism includes a first sprocket fixed for rotation with the second member, a second sprocket fixed for rotation with the input shaft and a flexible member interconnecting the first and second sprockets. A clutch transfers torque between the third member and the first shaft. An alternate transmission having the clutch and the planetary gearset reversed is also discussed.
Abstract:
Es wird eine Kupplungsvorrichtung (1) zum reibschlüssigen Verbinden zweier drehbarer Bauteile (2, 3) mit einer ersten Kupplungshälfte (4) und einer zweiten Kupplungshälfte (5), die jeweils mit einem der zu verbindenden Bauteile (2, 3) in Wirkverbindung stehen und über eine hydraulische Betätigungseinrichtung (6) miteinander reibschlüssig in Eingriff bringbar sind, beschrieben. Wenigstens die erste Kupplungshälfte (4) umfasst zum Herstellen und Lösen der reibschlüssigen Verbindung zwischen den beiden drehbaren Bauteilen (2, 3) ein erstes Bauelement (4A) und ein zweites Bauelement (4B), die relativ zueinander verdrehbar ausgeführt sind. Eine hydraulische Betätigungskraft der Betätigungseinrichtung (6) ist durch eine durch die reibschlüssig in Eingriff stehenden Kupllungshälften (4, 5) ausgelöste Relativbewegung zwischen den Bauelementen (4A, 4B) im Bereich der Wandlereinrichtung (7), mittels der eine Relativbewegung zwischen den Bauelementen (4A, 4B) in einen hydraulischen Betätigungsdruck der Betätigungseinrichtung (6) transformierbar ist, erzeugbar.
Abstract:
A hydraulic coupling (10) for use in motor vehicle driveline applications to limit speed differentiation and transfer drive torque between two rotary members. The hydraulic coupling includes a multi-plate clutch assembly (22) operably connecting the two relatively rotatable members, and a sealed actuator assembly (20) for actuating the clutch assembly (22) in response to the magnitude of speed differentiation between the two rotary members. The actuator assembly (20) includes a hydraulic pump (24) and a piston (70) which are sealed relative to the clutch assembly (22). The sealed actuator assembly (20) includes an internal recirculation path for supplying hydraulic fluid retained therein between a low pressure supply chamber (130) at the inlet side of the hydraulic pump (24) and a high pressure piston chamber (72) provided at the discharge side of the hydraulic pump (24). Hydraulic pressure in the piston chamber (72) controls the magnitude of the clutch engagement force exerted by the piston (70) on the clutch assembly (22). As a further feature, the recirculation path includes a flow restrictor (146) which provides a bleed flow path for supplying high pressure fluid from the piston chamber (72) to the supply chamber (130) following cessation of the pumping action to release the clutch assembly (22).