Eaton announced that it will supply its TVS air pump to manage airflow in the demonstration of the Achates Power two-stroke Opposed-Piston Engine (OP Engine).

Eaton’s TVS air pumps currently supply airflow to several Achates OP Engine prototypes, which will gradually transition to a new Eaton TVS air pump currently under development. Fundamental to the OP cycle is the air pump, which is the key air management technology and an enabler of the engine’s performance.

The on-road demonstration project is funded by a $9 million grant from the California Air Resources Board (CARB) to Calstart, an organization supporting clean transportation that is overseeing the project. The OP Engine will power the Calstart Class 8 commercial truck, which is expected by Calstart to achieve a 90% reduction in NOx and a 15–20% fuel efficiency improvement.