Detailed Information On Power Flow Path For Dual-Clutch Transmission - GF27.10-P-1101C
Transmission 724.103/114/115/120
Overview
This document contains information on:
- General
- Function requirements
- Function
- Force flux in 1st gear
- Force flux in 2nd gear
- Force flux in 3rd gear
- Force flux in 4th gear
- Force flux in 5th gear
- Force flux in 6th gear
- Force flux in 7th gear
- Force flux in 8th gear
- Force flux in reverse gear
General
The engine torque is transferred from the combustion engine crankshaft to the two-mass flywheel.
The two-mass flywheel transfers the engine torque to the engaged clutch K1 (internal shaft) or clutch K2 (hollow shaft) of dual clutch.
Function requirements
- Engine management ON (circuit 87M)
- Engine in operation
- Transmission control not in limp-home mode
Function
The dual clutch acts as an interface between the combustion engine and the dual-clutch transmission and allows virtually uninterrupted torque transfer during shift operations.
The drive torques from the clutches are transferred to the internal shaft and hollow shaft positively via ring gear profiles. The drive forces are transferred to power output shafts 1 or 2 (depending on the required gear) via the gearwheel connections.
Force flux in 1st gear, shown on transmission 724.1
Force flux in 1st gear
The following mechanical component parts and regulation valves are actuated or are designated for the force flux in 1st gear for gearshift or actuation:
- Clutch K1 regulation valve
- Clutch K1
The force flux of the 1st gear runs over: the internal shaft/drive shaft (1), internal shaft fixed gear (12), idler gear (3rd gear) (6), idler gear (4th gear) (8), hollow shaft fixed gear (13), idler gear (2nd gear) (18) and power output shaft (5th gear/reverse gear/2nd/6th gear) (20).
Force flux in 2nd gear, shown on transmission 724.1
Force flux in 2nd gear
The following mechanical component parts and regulation valves are actuated or are designated for the force flux in 2nd gear for gearshift or actuation:
- Clutch K2 regulation valve
- Clutch K2
The force flux of the 2nd gear runs over: the hollow shaft (2) and power output shaft (5th gear/reverse gear/2nd/6th gear) (20).
Force flux in 3rd gear, shown on transmission 724.1
Force flux in 3rd gear
The following mechanical component parts and regulation valves are actuated or are designated for the force flux in 3rd gear for gearshift or actuation:
- Clutch K1 regulation valve
- Clutch K1
The force flux of the 3rd gear runs over: the internal shaft/drive shaft (1), idler gear (3rd gear) (6) and the power output shaft (7th/3rd/4th/8th gear) (10).
Force flux in 4th gear, shown on transmission 724.1
Force flux in 4th gear
The following mechanical component parts and regulation valves are actuated or are designated for the force flux in 4th gear for gearshift or actuation:
- Clutch K2 regulation valve
- Clutch K2
The force flux of the 3rd gear runs over: the hollow shaft (2), idler gear (4th gear) (8) and the power output shaft (7th/3rd/4th/8th gear) (10).
Force flux in 5th gear, shown on transmission 724.1
Force flux in 5th gear
The following mechanical component parts and regulation valves are actuated or are designated for the force flux in 5th gear for gearshift or actuation:
- Clutch K1 regulation valve
- Clutch K1
The force flux of the 3rd gear runs over: the internal shaft/drive shaft (1), fixed gear (5th/7th gear) (11), idler gear (5th gear) (16) and the power output shaft (5th gear/reverse gear/2nd/6th gear) (20).
Force flux in 6th gear, shown on transmission 724.1
Force flux in 6th gear
The following mechanical component parts and regulation valves are actuated or are designated for the force flux in 6th gear for gearshift or actuation:
- Clutch K1 regulation valve
- Clutch K1
The force flux of the 3rd gear runs over: the internal shaft/drive shaft (1), fixed gear (6th/8th gear) (15), idler gear (6th gear) (19) and the power output shaft (5th gear/reverse gear/2nd/6th gear) (20).
Force flux in 7th gear, shown on transmission 724.1
Force flux in 7th gear
The following mechanical component parts and regulation valves are actuated or are designated for the force flux in 7th gear for gearshift or actuation:
- Clutch K1 regulation valve
- Clutch K1
The force flux of the 7th gear runs over: the internal shaft/drive shaft (1), fixed gear (5th/7th gear) (11), idler gear (7th gear) (5) and the power output shaft (7th/3rd/4th/8th gear) (10).
Force flux in 8th gear, shown on transmission 724.1
Force flux in 8th gear
The following mechanical component parts and regulation valves are actuated or are designated for the force flux in 8th gear for gearshift or actuation:
- Clutch K2 regulation valve
- Clutch K2
The force flux of the 7th gear runs over: the hollow shaft (2), idler gear (8th gear) (8) and the power output shaft (7th/3rd/4th/8th gear) (10).
Force flux in reverse gear, shown on transmission 724.1
Force flux in reverse gear
The following mechanical component parts and regulation valves are actuated or are designated for the force flux reverse gear for gearshift or actuation:
- Clutch K2 regulation valve
- Clutch K2
The force flux of the 7th gear runs over: the internal shaft/drive shaft (1), idler gear (3rd gear) (6), reverse gear idler gear (17) and the power output shaft (5th gear/reverse gear/2nd/6th gear) (20).