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 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 ...

James Martinez June 14, 2007 Comment Now! Toyota has announced that it has developed a new variable valve lift mechanism named ‘Valvematic’, which combines the previous VVT-i technology with a new ...

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 ...

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 ...

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 ...

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 ...

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To celebrate HOT ROD's 75th anniversary, we teamed up with CASTROL GTX to bring you some of the stories that exemplify the core of what HOT ROD is and reflect the brand's influence on America's car ...