Actuators
Conventional Powertrain, Powertrain Electrification
Actuators
Gear Shift Actuators
Last update: 02 Sep. 2024Electromechanical and hydraulic Gear Shift Actuators: what's the difference?
The EGS (Electro-Mechanical Gear Shift) or the HGS (Hydraulic Gear Shift) are actuators used in automatic transmission (Dual Clutch Transmission – DCT, Dedicated Hybrid Transmission – DHT, reducer) enabling Shift By Wire of the gears. The EGS (2 speed) is particularly designed to address 2-speed eDrive (P4 hybrid or BEV). Valeo offers both Electro-Mechanical & Hydraulic actuators to address all types of DHT, DCT and reducers.
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What are Valeo Gear shift actuator benefits?
- Design particularly adapted for electrified multiple speed transmission (Hybrids and BEV)
- Lightweight design by using aluminium and high performance plastics
EGS module (electromechanical actuator)
- Embedded electronics and diagnosis
- CAN-bus communication to ECU
- Shifting gears and park lock as an option
- Anti-theft norm certified/capable UN ECE R116
HGS module (hydraulic actuator)
- Fork integration available
- Sensors for shift position and shaft speed integrated
- Less shifting noise than typical electromechanical designs
- Trouble-free operation even after long standing periods
Valeo Gear shift actuator specifications EGS module
- Response time < 60 ms
- Shift force up to 400 N
- ASIL C compliant
- Temperature range: from -40°C to 125°C
Valeo Gear shift actuator specifications HGS module
- Operating pressure: up to 20 bars
- Shifting speed: 200 mm/s
- Shifting force: up to 1,500 N
- Self-venting actuators
Vehicle type
- Passenger car
- Bus
- Truck
- Robot taxi
- Motorcycle
- Bike
- Droid
- Off road
