Oil and emissions

摘要

Under normal operating conditions, a small portion of the oil lubricating an engine ends up In the exhaust and this can have an Impact on after-treatment technologies. While soot and other oil combustibles can be burnt off the ash derived from the engine oil remains trapped in the DPF. The sulphur and phosphorus in oil can also present problems for aftertreatment, while the use of EGR in the engine itself can lead to pollution and deposits in sensitive areas such as the turbo charger, intercoolers and the combustion-chamber.