The test vehicle has had its diesel engine replaced by a petrol engine converted to run on LPG. It will go into operation with Epsom Cars and Cabs, running 24 hours a day and including a 10,000-mile durability test.
Autogas believes the conversion will prove popular with black cab owners, who can extend the life of their vehicle for a further five years. Currently London imposes an age limit of 15 years on diesel-powered black cabs, but approved LPG conversions can run up to 20 years old.
From 2018, all new hackney carriages in London will have to be zero-emission capable as part of the city’s drive to reduce air pollution. Taxis which are already licensed won’t be affected.
Paul Oxford, Autogas business development manager, explains: “By converting with an approved LPG system they can get another five years of service from the vehicle, as well as dramatically reducing air pollution and making substantial savings on fuel costs.
“The driver will also have a better day at work, and the passengers will have a more comfortable journey, because the engine is incredibly quiet and with little vibration compared to its diesel equivalent.”
Initial emission testing at Millbrook has shown the LPG technology produces 80% less NOx emissions compared with a diesel-powered version, as well as a 99% reduction in PM.
At around 55p a litre, LPG is also much cheaper than conventional fuels. Repowering of a taxi costs around £8,000 and takes around three days.