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The E-series was a line of inline four-cylinder automobile engines designed and built by Honda for use in their cars in the 1970s and 1980s. These engines were notable for the use of CVCC technology, introduced in the ED1 engine in the 1975 Civic, which met 1970s emissions standards without using a catalytic converter .
Integrated Motor Assist (commonly abbreviated as IMA) is Honda's hybrid car technology, introduced in 1999 on the Insight. It is a specific implementation of a parallel hybrid . It uses an electric motor mounted between the internal combustion engine and transmission to act as a starter motor , power generator, engine balancer, and assist ...
The development of the IMA system is a result of optimizing the various technologies that Honda has built over the years, including the lean-burn combustion, low-emission engines, variable valve timing, high-efficiency electric motors, regenerative braking, nickel-metal hydride (Ni-MH) battery technology and the microprocessor control. [12]
Similar systems are used in conjunction with various semi-automatic transmissions, purely for clutch automation and actuation. A TCU in a modern automatic transmission generally uses sensors from the vehicle, as well as data provided by the engine control unit (ECU), to calculate how and when to change gears in the vehicle for optimum ...
These valves have been unpopular with some drivers and are sometimes removed in favour of a conventional clutch action. [2] The BMW valve takes the form of a separate pipe fitting and is easily removed. Honda has also used clutch delay valves on some Civic models, which are integral to the clutch slave cylinder and must be dismantled in situ. [3]
The clutch rotor passes through the bound particles, causing drag between the input and the output during rotation. Depending upon the output torque requirement, the output and input may lock at 100% transfer. When current is removed from the clutch, the input is almost free to turn with the shaft.
The SH-AWD all-wheel-drive system was lauded by Popular Science as one of the best automotive innovations of 2004, [citation needed] and as part of an already tech-filled vehicle helped to earn the 2005 "Tech car of the year" from CNET. [3] Honda has since announced an evolution of SH-AWD using hybrid electric technology.
The 9HP is only 0.24 inches (6 mm) longer than, and weighs 16.5 lbs (7.5 kg) less than, the outgoing six-speed transmission. The compact packaging is achieved by using a number of innovative design features: a new compact hydraulic vane-type pump, two patented dog clutches, [3] which replace bulkier conventional clutch packs, and a nested gear set. [2]