摘要: |
Such systems cut fuel usage and the vehicle's CO_2 footprint as well as emissions of harmful substances such as NOx and particulates. They are widely fitted to diesel urban buses for the same reasons, says Cummins communications director, Kevan Browne. "The majority of Cummins-powered buses sold in the UK are equipped with stop-start," he reports. "However it tends not to be fitted to buses used on rural, semi-rural or long-distance intercity routes." Their duty cycles means that they do not stop and start frequently enough to make installation worthwhile. |