Jacobs Vehicle Systems has confirmed that is working with more than one European coach and bus engine OEM on cylinder deactivation hardware, which it says will deliver fuel savings and emissions reductions
The names of those engine OEMs that are involved have not been released, but Jacobs says that the concept is “a technically proven and cost effective” way to reduce emissions under low engine loads.
A hydraulically activated mechanism is integrated into the engine. It can deactivate multiple cylinders as needed. At low engine loads, where three of an engine’s six cylinders are deactivated, fuel consumption can be improved by up to 20%, Jacobs says.
Emissions are reduced by achieving higher exhaust temperatures, which maintains optimal SCR efficiency. The technology also minimises cooling of those systems during coasting, adds the company.