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Brand: C.OEFT
OE numbers: TF70-2FB
Product Name: Transmission Assembly
Compatible model: /
Product status: /
Product weight：100KG
Packaging size: 100*100*100cm
Product packaging: Neutral Packaging
Car Series: France/Germany
Car Type: For Peugeot Citroen and Opel
1. Power Transmission & Conversion
Efficiently transfers power from internal combustion engines (ICE) or electric motors to drive wheels, converting engine/motor output (typically 1500-6000rpm for ICE, 8000-15000rpm for EV motors) into vehicle operating speeds (0-250km/h). Minimizes power loss during transfer, ensuring direct responsiveness to driver inputs ¹.
2. Speed-Torque Optimization
Adjusts gear ratios to match driving scenarios, balancing speed and torque:
Start-up/Climbing: Low gear ratios (2.5-4.0:1) amplify torque (up to 3000Nm for heavy-duty trucks) to overcome inertia and steep slopes ⁵.
Cruising: High gear ratios (0.7-1.0:1) reduce engine rpm (1500-2000rpm at 100km/h), lowering fuel consumption and wear ³.
Acceleration: Seamless gear progression (5-10 forward gears for ICE vehicles, single-speed or 2-speed for EVs) maintains optimal engine/motor efficiency ⁶.
3. Direction Control
Integrates forward, reverse, and neutral gears:
Reverse gear uses inverted gear trains to reverse power flow, enabling safe backing (typically 1.5-3.0:1 ratio) ⁶.
Parking pawl mechanism locks the transmission to prevent vehicle roll when stationary ³.
4. Adaptive Driving Mode Matching
Works with vehicle control systems to adapt to driving modes (Eco/Sport/Comfort):
Eco Mode: Optimizes gear-shifting timing to prioritize fuel efficiency (e.g., upshifting at lower rpm) ³.
Sport Mode: Delays upshifting and holds lower gears for faster acceleration (shift times <0.2 seconds for DCT) ⁶.
5. Protective & Safety Functions
Torque converter or clutch slip control mitigates engine stalling during sudden load changes (e.g., stop-and-go traffic) ³.
Overload protection limits torque input to prevent gear damage; hill-hold control prevents rollback on slopes ⁵.
EV-compatible designs include regenerative braking integration, converting kinetic energy to electrical energy ⁶.
1. Exceptional Fuel Efficiency & EV Compatibility
Advanced designs (e.g., ZF 8AT, Aisin 10AT) achieve transmission efficiency up to 99% ¹, reducing fuel consumption by 8-15% compared to traditional gearboxes ³.
CVT eliminates gear-shift gaps, maintaining engine at its most efficient rpm range (2000-3000rpm) to save 5-10% fuel ⁶.
EV-specific 2-speed gearboxes (e.g., Tesla Cybertruck) extend driving range by 10-15% by optimizing motor efficiency at high speeds ⁶.
Electronic control systems (e.g., Ford’s PowerShift) adapt shifting logic to driving habits, further enhancing energy utilization ³.
2. Superior Durability & Reliability
Constructed with high-strength alloy steel (e.g., 20CrMnTi, 42CrMo) and precision heat treatment (carburizing, nitriding), withstanding torque loads up to 3500Nm (commercial vehicles) ¹.
Sealed lubrication systems use long-life synthetic transmission fluid (e.g., ATF WS, DCTF), extending maintenance intervals to 80,000-150,000km (passenger cars) or 200,000km (commercial vehicles) ¹.
FEA-optimized aluminum alloy housings reduce weight by 15-20% while improving structural rigidity, reducing vibration by 30% ⁴.
Proven service life: 200,000-300,000km for passenger car gearboxes, 500,000km+ for heavy-duty truck gearboxes ⁵.
3. Tailored Performance for Vehicle Types
Passenger Cars:
DCT (Dual-Clutch Transmission): Fast shift times (<0.1 seconds) for sporty driving; smooth operation for daily commutes ⁶.
CVT (Continuously Variable Transmission): Seamless acceleration without shift shocks; compact design for small cars ⁶.
AT (Automatic Transmission): Reliable performance for family cars; torque converter for smooth low-speed operation ³.
Commercial Vehicles (Trucks/Buses):
AMT (Automated Manual Transmission): Reduces driver fatigue during long-haul; high torque capacity (up to 4000Nm) for towing ⁵.
Hydraulic torque converters handle frequent start-stop cycles (e.g., city buses) with minimal wear ³.
Electric Vehicles:
Single-speed gearboxes: Compact, lightweight, and low-maintenance for urban EVs ⁶.
2-speed gearboxes: Balances acceleration and top speed for high-performance EVs ⁶.
4. Enhanced Driving Comfort & Safety
Seamless shifting (AT/DCT/CVT) eliminates power interruptions, reducing jolts during acceleration/deceleration ³.
Noise reduction design (optimized gear tooth profiles, sound-insulating housings) keeps operational noise below 65dB (passenger cars) ³.
Hill-hold control and anti-rollback features improve safety on slopes; adaptive shifting adapts to slippery roads (e.g., rain, snow) ⁵.
Low-speed maneuverability: Torque converter technology enables smooth crawling (5-10km/h) for parking or off-road driving ³.
5. Cost-Effective Total Ownership
Modular design simplifies maintenance and component replacement, lowering repair costs by 25-35% compared to non-modular designs ⁴.
High reliability reduces downtime, enhancing productivity for commercial vehicle operators.
Compliance with global emission standards (Euro 7, EPA Tier 4 Final, China 6b) avoids regulatory penalties and supports sustainable mobility ³.
6. Advanced Technological Integration
Electronic Hydraulic Control (EHC) systems enable precise gear shifts and adaptive learning, matching driving styles ⁶.
Connectivity features (e.g., over-the-air updates) allow software optimization for performance or efficiency post-purchase ⁶.
Integration with hybrid/EV powertrains (e.g., PHEV transmission with electric motor coupling) supports future mobility trends ⁶.
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