![]() ![]() And the commonalities among all 8HP gearboxes allow companies to share core elements between vehicles as different as the Dodge Demon and the Ram 1500, minimizing development costs. The ability to swap the torque converter for an electric motor, as BMW has done, allows automakers to develop hybrid variants with minimal changes to the drivetrain. It is compatible with a variety of all- and four-wheel-drive systems, such as an integrated center differential or a two-speed transfer case. It can accommodate a maximum torque output from as low as 162 pound-feet up to 770. Beyond performance, the eight-speed’s appeal is rooted in its versatile modular design. ![]() In 2017, some 3.5 million 8HP transmissions were built for a laundry list of manufacturers that includes Aston Martin, BMW, Fiat Chrysler, Jaguar Land Rover, and the Volkswagen Group. The 8HP transmission comes only in longitudinal form for rear- or all-wheel-drive vehicles, and we prefer it immensely to ZF's transverse alternative, a nine-speed. The 8HP also executes certain multigear shifts in this manner witness the leaps from sixth gear to third and even eighth to second. All one-gear and two-gear shifts use just two shifting elements: one opens, another closes. They’re also a product of a fundamental design that determines how the four planetary gearsets, three clutches, and two brakes in every 8HP gearbox are parsed into eight forward ratios. The 8HP transmission from German supplier ZF is quick enough to serve sports cars and graceful enough for large luxury sedans, and it combines those elements of speed and smoothness whether it’s installed in an Aston Martin, a Rolls-Royce, or a Jeep.Īlbert Dick, vice president of car powertrain technology at ZF, says the 8HP’s deeply satisfying shifts are rooted in factors ranging from the quality of the solenoids to the manufacturing methods to the control software. ![]()
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