About 24 results
https://drivepatents.com/patents/994033 · 9 Jan 2013
The method involves dissipating heat generated by hydrodynamic retarder (1) by coolant in engine cooling circuit (2) of vehicle drive motor (3). The retarder has driven primary blade (4) and secondary blade (5), which together form a toroidal portion which...
https://drivepatents.com/patents/999774 · 1 Aug 2012
The machine has primary wheel and secondary wheel, which together form a toroidal form. The working medium is partially introduced into working space through ventilation aperture to prevent working medium deflated state in working space. The passage openin...
https://drivepatents.com/patents/1000983 · 27 Jun 2012
The method involves changing the eccentric arrangement position of the stator axis in dependence of the asymmetric fluid-pressure field in the pressure chamber of the retarder and generating a symmetrical pressure field. The asymmetric fluid-pressure field...
https://drivepatents.com/patents/1002497 · 9 May 2012
The invention relates to a braking apparatus for a vehicle 10, in particular a heavy goods vehicle, the braking apparatus including a drive axle, such as the rear axle 6, having a transmission gear 18, such as a differential 18, around which the amount of ...
https://drivepatents.com/patents/1015087 · 9 Mar 2011
The retarder system has a rotor and a stator, which are equipped with shovels and placed opposite to each other in a common housing. A closing element (19) is guided on a shank of a valve piston (11). The closing element is placed between cranks (14,15) of...
https://drivepatents.com/patents/1070160 · 8 Feb 2006
At the start of a switch-off process of the retarder (14), the cooling system (10) is bled to atmospheric pressure. After the switch-off process of the retarder, and also when the vehicle is started up, the cooling system is brought to a desired system pre...
https://drivepatents.com/patents/1090371 · 14 Jan 2004
The braking effect limiting process involves limiting the braking effect by regulating and/or controlling it after reaching a preset temperature thetamax, depending on the temperature gradients of the coolant. The form of the curve is set by means of a pre...
https://drivepatents.com/patents/1090577 · 7 Jan 2004
The present invention relates to a hydrodynamic brake. The hydrodynamic brake comprises a stator (1) and a rotor (2). A first medium is intended to be supplied to a toroidal space (7) of the hydrodynamic brake in order to effect a braking action. A second ...
https://drivepatents.com/patents/1090576 · 7 Jan 2004
A hydrodynamic brake which comprising a stator (1), a rotor (2), a toroidal space (7) defined by the stator (1) and rotor (2), a medium intended to be supplied to the toroidal space (7) when the hydrodynamic brake is activated, a first pipe circuit (35) wh...
https://drivepatents.com/patents/1096197 · 7 May 2003
The hydrodynamic retarder comprises a control circuit including incorporating a hydraulic pump (10), a heat exchanger (3), inlet (4) and outlet (5) valves, and a control and regulating unit (6). The hydraulic pump is driven by an electric motor (2) which i...