Diesel/Electric Hybrid

A diesel/electric hybrid bus combines two power sources in the vehicle drive train - a conventional diesel engine and an electric motor. The hybrid system enables energy to be recovered during braking and then released to accelerate the vehicle.

There are several different types of hybrid architecture; such as series, parallel, and micro-hybrid. These powertrain systems can be used with various types of energy storage, including the use of chemical batteries or supercapacitors.

Diesel hybrids are the most common form of low emission bus technology in the UK to date.

The WTW GHG emisison savings for diesel/electric hybrid buses, certified under ULEB accreditation, range from 31% - 36% compared to an equivalent Euro VI diesel bus, and 15% - 37% compared to an equivalent Euro V diesel bus certified under LEB accreditation.

For further information on diesel/electric hybrid buses and infrastructure, please download the Low Emission Bus Guide.

Download the Low Emission Bus Guide

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