Westport and Volvo are demonstrating a 500-hp truck with diesel-like efficiency — one that also offers what Westport says is ...
Horse Powertrain's X-Range C15 Direct Drive uses a flat-four engine to convert EV platforms into hybrids without major ...
In an effort to help meet more restrictive emissions standards, GM launched a technology in 2005 that deactivates engine cylinders during undemanding driving scenarios. Known by both Displacement on ...