Series Hybrid

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Digital Displacement® technology connects the high reliability and power density of hydraulics with the efficiency required for an effective hybrid system:

Artemis demonstrated its first full Digital Displacement® Hybrid Transmission in a BMW 530i, in May 2008.   Independent tests confirmed the car gave double the fuel economy in city driving compared to the same car with a six speed manual transmission.  Overall, including highway driving, the vehicle had 30% lower carbon dioxide emissions using the hydraulic series transmission.

Series modes

Optimum operation of the engine using infinitely variable ratio between engine and wheels
Braking energy recovered and stored in lightweight simple hydraulic accumulators
Engine off operation when running from stored energy

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Key benefits

High transmission efficiency
Fast control response to driver demand
High power density
Low embodied energy
Robust, long life components

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