Applications in development: Digital Displacement® Hybrid Transmissions

Artemis's Digital Displacement® technology is ideal for building series or parallel hydraulic hybrid transmissions for automotive applications. Artemis has recently successfully tested a BMW 530i equipped with such a Digital Displacement® Hybrid transmission. Details of the programme are below and here.

Emissions reduction

Independent tests have confirmed that a prototype car, fitted on a BMW 530i, gave double the MPG in city driving compared to the same car with a six speed manual transmission. Overall, including highway driving, the prototype had 30% lower carbon dioxide emissions than it had before the company fitted its energy saving transmission.

MPG improvement for Digital Displacement Hybrid

Before and after cold start tests on HEDDAT 2 BMW 530i with standard six-speed manual and Digital Displacement Hybrid transmissions. Tests conducted by Millbrook Proving Ground and supervised by the Energy Saving Trust. FTP 72 tests were hot start tests.

System design

A Digital Displacement® Hybrid Transmission consists of connecting a Digital Displacement® Pump mounted to a standard internal combustion engine. The pump is hydraulically connected to Digital Displacement® Motors coupled to the wheels.

This model of a real demonstrator vehicle shows a transversely-mounted rear wheel drive layout - many other layouts are possible.

Demonstrator vehicles

Digital Displacement Hybrids are reality: public demonstration events have been held on two occasions.

Artemis publicly demonstrated its first full Digital Displacement Hybrid Transmission, fitted to a BMW 530i, on May 30th 2008. Images and videos are available here.

May 2008 Launch for BMW 530i with full Digital Displacement Transmission

Artemis Intelligent Power LTD publicly unveiled the HEDDAT (High Efficiency Digital Displacement Automotive Transmission) programme on April 4th 2005. The first vehicle was a Ford Focus with a Digital Displacement® Pump coupled to the engine with conventional hydraulic components driving the wheels. Images and videos are available here.

Press release for HEDDAT Public Launch April 2005

Further information

Operation

All about how the system works.

Benefits

Page covering the benefits of the Digital Displacement Transmissions and how it compares to Hybrid Electric Vehicles (HEVs).

Videos and pictures
Page with videos and pictures of the development and demonstration vehicles