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 ...
webBikeWorld

Fast Filings: Suzuki’s Hayabusa Could Get Variable Valve Timing

The bike that won the title of “world’s fastest production motorcycle” at the turn of the century could soon sport a bit of tech that will support hi-rev performance at lower emissions… but at what ...
Engineering Explained on MSN

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 ...
JSTOR Daily

Variable Valve Timing for Fuel Economy Improvement — The Mitchell System

The Mitchell mechanical Variable Valve Timing (VVT) system is described. The way in which it exploits variable angular velocity to change valve timing is explained. The system was used in a programme ...
ZigWheels

Variable Valve Timing (VVT)

VVT has turned out to be one the most popular systems with carmakers and users alikernAn internal combustion engine uses valves for intake and exhaust In the current automobile scenario where there ...
autoevolution

Variable Valve Timing Helps Chevrolets Breathe Better

Getting air in and exhaust gases out of the combustion chamber under all speeds and driving conditions is essential for a car’s fuel efficiency and low emissions. That’s why virtually all Chevrolet ...
Car and Driver

Timing Changes: How Honda’s VTEC Variable-Timing System Works

Trademark erosion may not impact the environment, but marketers have noted the lexicographical slide of some brand names into generic labels. Kleenex, Band-Aid, Xerox, and Zamboni (yes, other ...
Motorcyclist

Desmodromic Variable Timing Explained

Valve overlap—that crucial interval when both the intake and exhaust valves are open, expressed in degrees of crankshaft rotation—is typically a fixed parameter and always a compromise. For example, ...
Hot Rod

Variable Valve Timing For Circle Track Engines

In order to set a stage for what follows, let's first revisit some of the fundamentals involved in how valve timing relates to power output. And to further clarify how "power" is defined in the ...