Modern internal combustion engines — including those that run on diesel fuel — require a lot of special parts and systems to prevent dumping excess emissions into the atmosphere. Not only are those ...

Time was when a valve job was done with some valve-grinding compound and a vacuum cup on a stick. But no more. Today's high performance engines require the same machining precision in the valves that ...

A hundred years ago, Opel developed it’s first engine utilizing four valves per cylinder for use in the 1913 Grand Prix racing car. Little did they know at the time that this innovative technology ...

British company Camcon Automotive has built a fully digital engine valve system, uncoupled from the crank, that offers unprecedented control over the combustion cycle. It enables some weird and ...

General Motors sees a future for engines with overhead valves, a technology most automakers have abandoned in favor of overhead camshafts. GM will introduce a new family of overhead-valve (OHV) V-6s ...

While the engineering community continues to explore the benefits of electric and hybrid vehicles—i.e., the environmental and renewable energy factors—the automotive market is still dependent on ...

Modern engine bays are filled with black plastic where bright cast aluminum once sat, and few parts symbolize that shift more ...