June 19, 2007 Toyota has developed a new form of valve actuation for internal combustion engines which it claims improves fuel efficiency by 5 to 10 per cent, enhances throttle response, reduces CO2 ...

The 'Intelligent Valve Actuation ( IVA)' system that operates the intake and exhaust valves that are arguably installed in gasoline and diesel engines with only the power of an electric motor is a ...

At the end of the day, an internal combustion engine is just an air pump. Proper airflow in and out of the engine is thus ...

What's scarier than a Maserati engine from the '80s? A more sophisticated one from the same timeline. Admittedly, we can't really comment on its reliability, as Maserati's prototype six-valve engine ...

February 2, 2006 UK-based RCV Engines is best known globally for its range of model aircraft engines but the unveiling yesterday of a prototype 125cc Rotating Cylinder Valve (RCV) scooter engine could ...

Called Valvematic, the new Toyota system combines VVT-i (Variable Valve Timing-intelligent), which continuously controls the intake valve opening and closing timing, with a new mechanism that ...

THE purpose of the authors in producing this book has been to provide an elementary treatise on the kinematics of reciprocating steam engines and steam turbines, and to make clear to the beginner the ...

In last month's "Tech Scene," we compared the differences between Toyota's VVTL-i (Variable Valve Timing and Lift-intelligence) and Honda's VTEC (Variable Valve Timing and lift Electronic Control).

American publisher Charles Knight was not at all impressed with his new 1901 Knox ‘gasoline runabout’. Like some other cars of the era, its four-stroke engine relied on a single valve to permit both ...

Japan's Toyota Motor Corp. said June 12 it had developed a next-generation engine valve mechanism that can improve the fuel efficiency of petrol-powered vehicles by about 5% to 10%. The new system ...