ANNEX VI U.K. VERIFYING TRANSMISSION, TORQUE CONVERTER, OTHER TORQUE TRANSFERRING COMPONENT AND ADDITIONAL DRIVELINE COMPONENT DATA

Appendix 11

Standard torque loss values – geared angle drive U.K.

Consistent with the standard torque loss values for the combination of a transmission with a geared angle drive in Appendix 8, the standard torque losses of a geared angle drive without transmission shall be calculated from:

where:

T_l,in

=

Torque loss related to the input shaft of transmission [Nm]

T_addx

=

Additional angle drive gear drag torque at x rpm [Nm]

(if applicable)

n_in

=

Speed at the input shaft of transmission [rpm]

f_T

=

1-η;

η

=

efficiency

f_{T_add}

=

0,04 for angle drive gear

T_in

=

Torque at the input shaft of transmission [Nm]

T_max,in

=

Maximum allowed input torque in any forward gear of transmission [Nm]

=

max(T_max,in,gear)

T_max,in,gear

=

Maximum allowed input torque in gear, where gear = 1, 2, 3,… top gear)

The standard torque losses obtained by the calculations above may be added to the torque losses of a transmission obtained by Options 1-3 in order to obtain the torque losses for the combination of the specific transmission with an angle drive.