The first Cybrand TX4 Euro 6 black cab retrofit kit will be installed in Scotland this week, with a number more further expected as conversion kits become available to cabbies.
Aside from buying a new Zero-Emission Capable (ZEC) taxi, retrofitting existing cabs to meet Euro 6 compliance standards is seen as one way to eliminate daily charges and future proofing a driver’s taxi. Using a fully approved retrofit conversion could not only save money on fees, but it will also ensure that the taxi is less harmful to the environment.
The conversion is currently available for Euro 5 Mercedes Vito, Peugeot E7 taxis and the LTi TX4. The price of the conversation is around £5,000 plus VAT. Some cities implementing Clean Air Zones are still offering grants available through local government, meaning the cost of the conversion can be considerably slashed.
The accreditation required to become exempt from emission zone fees within the LEZ or CAZ is known as Clean Vehicle Retrofit Accreditation Scheme (CVRAS) and is administered by the Energy Saving Trust.
On a standard Euro 5 compliant taxi, exhaust gas from the turbocharger passes directly into the combined catalytic converter and diesel particulate filter and from there through the silencer to the tailpipe.
On a retrofitted Euro 6 compliant cab, a new Selective Catalytic Reduction (SCR) system is installed into the exhaust system further downstream. This incorporates a thermo-electric element which helps to bring the exhaust to an ideal temperature to encourage efficient catalytic conversion. Together with the introduction of AdBlue, which is a diesel exhaust fluid, the SCR system reduces NOx down to levels that exceed the requirements of Euro 6.
SCR is beneficial because it reduces NOx by up to 90% and is one of the most cost-effective and fuel-efficient technologies available.
The retrofit system also comes with a full 2-year warranty and local installation options are being rolled out continuously.