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Variable valve lift vs variable valve timing - VVL vs VVT

What is VVL? What is VVT? How does VVL/VVT work? What is variable valve lift? What is variable valve timing? We're going to look at the valvtrain from a 2009 Audi 2.0L I4 Turbo engine to check out the ...
Hot Rod

Why Variable Valve Timing? IVC Systems' 1999 Breakthrough Helps to Answer

Every aspect of an engine is a compromise: torque for horsepower, efficiency for emissions, performance for fuel economy, compression for octane tolerance. During the evolution of the internal ...
webBikeWorld

Ducati variable timing improves engines

Ducati has announced it will introduce new engine technology that will boost power and torque, improve fuel economy, reduce emissions and won’t affect servicing intervals. Ducati Testastretta engine ...
SlashGear

What Was The First Engine To Feature Variable Valve Timing & Why Was It Such A Game Changer?

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, ...
Seeking Alpha

BorgWarner Supplies Variable Cam Timing Technology for Major East Asian OEM's Hybrid and Gasoline Engines

Optimized valve timing improves fuel economy and power output Advanced technology meets Tier 4 North American emission standards Strengthens long-term relationship between BorgWarner (BWA) and major ...

What's the difference between single and dual overhead cam engines?

Ever wondered what people are talking about when they say "dual overhead cam"? Don't worry, because we're here to explain it ...
GM Authority

GM Files To Patent Variable Compression Combustion Engine Technology

GM has filed a patent application for so-called “Multilink Cranktrains with Combined Eccentric Shaft and Camshaft Drive System for Internal Combustion Engines.” The system is designed to provide ...