BS ISO 12161:2006 pdf download.Road vehicles—Endurance braking systems of motorvehicles and towed vehicles —Test procedures.
3.22.1.2 secondary retarder
retarder located on the dnve train of motor vehicles between the gearbox (torque conve1er) and the drive axle(s)
NOTE Retarders can be connected to non-dnven axles and are also classed as secondary relarders.
3.2.2.1.3
other retarders
retarders which are not categorized in 32.2.1.1 or 3.22,1.2 (e.g. aerodynamic retarders)
3.2.2.2
types of retarders
3.22.2.1
combustion engine retarder
3.22.2.1.1
engine braking
means whereby the engine drag resulting from the reduction of the fuel input and the throttling of the induction air supply whst the engine is linked to the driving wheels retards the vehicle (see 5.5.3.1.3.1 of
iSO 6112003)
3.22.2.1.2
engine retarder
mechanism in which an increased retarding effect is obtained by changing the valve timing to increase the internal resistance (drag) of the engine (see 5.5.3.1.32 of ISO 611:2003)
3.2.2.2.1.3
exhaust retarder
mechanism in which an increased retarding effect is obtained by blocking the flow of the exhaust gas to increase the internal resistance of the engine (see 5.5.3.1.3.3 of ISO 611:2003
3.2.2.2.2
electric traction motor retarder
mechanism in which the electric traction motor, linked to the driving wheels, exercises a retarding effect on the moving vehicle, for example, by functioning as a current generator (see 5.5.3.1.3,4 of ISO 611:2003)
3.2.2.2.3 hydraulic retarder
retarder in which a retarding effect is obtained by the action of liquid on rotatinpumping components linked to one or more wheels
3.22.2.3.1
hydrodynamic retarder
hydraulic retarder in which the power absorption is based on the principle of specific kinetic energy of a fluid
3.2.2.2.3.2
hydrostatic retarder
hydraulic retarder in which the power absorption is based on the principle of specific kinetic energy of a fluid.
retarder located on the dnve train of motor vehicles between the gearbox (torque conve1er) and the drive axle(s)
NOTE Retarders can be connected to non-dnven axles and are also classed as secondary relarders.
3.2.2.1.3
other retarders
retarders which are not categorized in 32.2.1.1 or 3.22,1.2 (e.g. aerodynamic retarders)
3.2.2.2
types of retarders
3.22.2.1
combustion engine retarder
3.22.2.1.1
engine braking
means whereby the engine drag resulting from the reduction of the fuel input and the throttling of the induction air supply whst the engine is linked to the driving wheels retards the vehicle (see 5.5.3.1.3.1 of
iSO 6112003)
3.22.2.1.2
engine retarder
mechanism in which an increased retarding effect is obtained by changing the valve timing to increase the internal resistance (drag) of the engine (see 5.5.3.1.32 of ISO 611:2003)
3.2.2.2.1.3
exhaust retarder
mechanism in which an increased retarding effect is obtained by blocking the flow of the exhaust gas to increase the internal resistance of the engine (see 5.5.3.1.3.3 of ISO 611:2003
3.2.2.2.2
electric traction motor retarder
mechanism in which the electric traction motor, linked to the driving wheels, exercises a retarding effect on the moving vehicle, for example, by functioning as a current generator (see 5.5.3.1.3,4 of ISO 611:2003)
3.2.2.2.3 hydraulic retarder
retarder in which a retarding effect is obtained by the action of liquid on rotatinpumping components linked to one or more wheels
3.22.2.3.1
hydrodynamic retarder
hydraulic retarder in which the power absorption is based on the principle of specific kinetic energy of a fluid
3.2.2.2.3.2
hydrostatic retarder
hydraulic retarder in which the power absorption is based on the principle of specific kinetic energy of a fluid.
