From the September 1997 issue of Car and Driver. During our first drive of this new five-valve Audi A4 2.8, we noticed that the only cars able to force us out of the blazing left lane of the autobahn ...

EGR stands for exhaust gas recirculation, and the EGR valve is part of a system that does as the name implies: recirculate exhaust gas back into the engine’s intake manifold for a return trip to the ...

There is so much going on with internal combustion engines (ICEs) these days, it can give you a headache just reading about them. That's why we do the research for you and then cram it into bite-size ...

A hot air or Stirling engine runs without carburetors, injectors, cams, valves, timing chains, spark plugs, or anything. It’s incredibly simple and can even be emissions negative, running on waste ...

The first production car engine with variable valve timing (VVT) came from Alfa Romeo in 1980. It was installed in the fuel-injected Alfa Romeo Spider. Before this, a few experimental systems existed, ...

“VTEC just kicked in, yo!” is a popular phrase you’ve probably heard before, but there’s a story and a meaning behind the saying. If you have driven or been around Honda-branded cars since the ...

Patents filed by Suzuki have surfaced, showing that it is still forging on with its small capacity (250cc) Variable Valve Timing (VVT) system. The new system is thought to be heading to the V-Strom ...

Abstract: This paper presents an optimal tracking control of engine valve timing for an electro-hydraulic variable valve actuator utilizing the adaptively estimated supply pressure that is the main ...

The inlet valve closing (IVC) timing plays a crucial role in engine combustion, which impacts engine performance and emissions. This study attempts to measure the potential to use n-butanol (Bu) and ...