, a 6-speed automatic transmission designed specifically for heavy-duty city and intercity buses.
Automatic Transmission
The transmission features a wide ratio spread that allows for powerful low-end launch performance and fuel-efficient cruising at highway speeds: zf ecolife 6ap1700b
: Approximately 42 dm³ (liters) of specialized transmission fluid. Engineering for Efficiency and Comfort
Approximately 376 kg (dry weight including retarder and oil cooler). , a 6-speed automatic transmission designed specifically for
The core mechanics of the 6AP1700B revolve around a highly efficient six-speed planetary gearset managed by advanced electrohydraulic controls. Unlike automated manuals, its true automatic torque converter configuration guarantees powershifts without any tractive force interruption, maintaining consistent forward momentum while protecting the entire vehicle drivetrain from shock loads. Specification Component Technical Detail ZF EcoLife 6AP1700B Maximum Input Torque 1,700 Nm Base Weight (Dry, approx.) 376 kg (with retarder & oil cooler) Max Permissible Vehicle Weight Up to 42 tons (axle ratio dependent) Oil Capacity (Standard Sump) ~42 dm³ (42 liters) Total Mechanical Gear Spreading
: It utilizes a stainless steel heat exchanger for better temperature resistance and a longer service life. Gear Ratios The core mechanics of the 6AP1700B revolve around
Features a reinforced, corrosion-resistant stainless steel heat exchanger that manages both transmission and retarder heat, extending oil change intervals.
For passengers and drivers alike, smooth gear shifts are crucial. The EcoLife transmission features fast, comfortable shifting that minimizes interruptions to pulling power. This contributes to a smoother ride in urban environments with frequent stop-and-go traffic. 3. High Reliability and Robustness
