- Y Diweddaraf sydd Ar Gael (Diwygiedig)
- Gwreiddiol (Fel y’i mabwysiadwyd gan yr UE)
Commission Regulation (EU) 2017/2400 of 12 December 2017 implementing Regulation (EC) No 595/2009 of the European Parliament and of the Council as regards the determination of the CO2 emissions and fuel consumption of heavy-duty vehicles and amending Directive 2007/46/EC of the European Parliament and of the Council and Commission Regulation (EU) No 582/2011 (Text with EEA relevance)
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A transmission, torque converter, other torque transferring components or additional driveline components family is characterized by design and performance parameters. These shall be common to all members within the family. The manufacturer may decide which transmission, torque converter, other torque transferring components or additional driveline components belong to a family, as long as the membership criteria listed in this Appendix are respected. The related family shall be approved by the Approval Authority. The manufacturer shall provide to the Approval Authority the appropriate information relating to the members of the family.
In some cases there may be interaction between parameters. This shall be taken into consideration to ensure that only transmissions, torque converter, other torque transferring components or additional driveline components with similar characteristics are included within the same family. These cases shall be identified by the manufacturer and notified to the Approval Authority. It shall then be taken into account as a criterion for creating a new transmission, torque converter, other torque transferring components or additional driveline components family.
In case of devices or features, which are not listed in paragraph 9. and which have a strong influence on the level of performance, this equipment shall be identified by the manufacturer on the basis of good engineering practice, and shall be notified to the Approval Authority. It shall then be taken into account as a criterion for creating a new transmission, torque converter, other torque transferring components or additional driveline components family.
If members within a family incorporate other features which may be considered to affect the torque losses, these features shall also be identified and taken into account in the selection of the parent.
Gear ratio, gearscheme and powerflow (for forward gears only, crawler gears excluded);
Center distance for countershaft transmissions;
Type of bearings at corresponding positions (if fitted);
Type of shift elements (tooth clutches, including synchronisers or friction clutches) at corresponding positions (where fitted).
Single gear width ± 1 mm;
Total number of forward gears;
Number of tooth shift clutches;
Number of synchronizers;
Number of friction clutch plates (except for single dry clutch with 1 or 2 plates);
Outer diameter of friction clutch plates (except for single dry clutch with 1 or 2 plates);
Surface roughness of the teeth;
Number of dynamic shaft seals;
Oil flow for lubrication and cooling per input shaft revolution;
Oil viscosity (± 10 %);
System pressure for hydraulically controlled gearboxes;
Specified oil level in reference to central axis and in accordance with the drawing specification (based on average value between lower and upper tolerance) in static or running condition. The oil level is considered as equal if all rotating transmission parts (except for the oil pump and the drive thereof) are located above the specified oil level;
Specified oil level (± 1mm).
The parent transmission shall be selected using the following criteria listed below.
Highest single gear width for Option 1 or highest Single gear width ± 1 mm for Option 2 or Option 3;
Highest total number of gears;
Highest number of tooth shift clutches;
Highest number of synchronizers;
Highest number of friction clutch plates (except for single dry clutch with 1 or 2 plates);
Highest value of the outer diameter of friction clutch plates (except for single dry clutch with 1 or 2 plates);
Highest value for the surface roughness of the teeth;
Highest number of dynamic shaft seals;
Highest oil flow for lubrication and cooling per input shaft revolution;
Highest oil viscosity;
Highest system pressure for hydraulically controlled gearboxes;
Highest specified oil level in reference to central axis and in accordance with the drawing specification (based on average value between lower and upper tolerance) in static or running condition. The oil level is considered as equal if all rotating transmission parts (except for the oil pump and the drive thereof) are located above the specified oil level;
Highest specified oil level (± 1 mm).
Outer torus diameter;
Inner torus diameter;
Arrangement of pump (P), turbine (T) and stator (S) in flow direction;
Torus width;
Oil type according to test specification;
Blade design;
Outer torus diameter;
Inner torus diameter;
Arrangement of pump (P), turbine (T) and stator (S) in flow direction;
Torus width;
Oil type according to test specification;
Blade design
Gear scheme and power flow in torque converter mode
Type of bearings at corresponding positions (if fitted)
Type of cooling/lubrication pump (referring to parts list)
Type of shift elements (tooth clutches (including synchronisers) or friction clutches) at corresponding positions where fitted
Oil level according to drawing in reference to central axis.
As long as all criteria listed in 5.1.1 are identical every member of the torque converter without mechanical transmission family can be selected as parent.
The parent hydrodynamic torque converter with mechanical transmission (parallel arrangement) shall be selected using the following criteria listed below.
Highest oil level according to drawing in reference to central axis.
Outer torus diameter;
Torus width;
Blade design;
Operating fluid.
Drum design (electro magnetic retarder or permanent magnetic retarder);
Outer rotor diameter;
Cooling blade design;
Blade design.
Outer torus diameter;
Torus width;
Blade design.
Outer torus diameter - inner torus diameter (OD-ID);
Number of blades;
Operating fluid viscosity (± 50 %).
Outer rotor diameter - inner rotor diameter (OD-ID);
Number of rotors;
Number of cooling blades / blades;
Number of arms.
Operating fluid viscosity (± 10 %);
Outer torus diameter - inner torus diameter (OD-ID);
Number of blades.
Highest value: outer torus diameter – inner torus diameter (OD-ID);
Highest number of blades;
Highest operating fluid viscosity.
Highest outer rotor diameter – highest inner rotor diameter (OD-ID);
Highest number of rotors;
Highest number of cooling blades/blades;
Highest number of arms.
Highest operating fluid viscosity (± 10 %);
Highest outer torus diameter – highest inner torus diameter (OD-ID);
Highest number of blades.
Gear ratio and gearscheme;
Angle between input/output shaft;
Type of bearings at corresponding positions
Single gear width;
Number of dynamic shaft seals;
Oil viscosity (± 10 %);
Surface roughness of the teeth;
Specified oil level in reference to central axis and in accordance with the drawing specification (based on average value between lower and upper tolerance) in static or running condition. The oil level is considered as equal if all rotating transmission parts (except for the oil pump and the drive thereof) are located above the specified oil level.
Highest single gear width;
Highest number of dynamic shaft seals;
Highest oil viscosity (± 10 %);
Highest surface roughness of the teeth;
Highest specified oil level in reference to central axis and in accordance with the drawing specification (based on average value between lower and upper tolerance) in static or running condition. The oil level is considered as equal if all rotating transmission parts (except for the oil pump and the drive thereof) are located above the specified oil level.
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