Since the beginning of hot rodding, gearheads have endeavored to increase the performance of internal combustion engines through the optimization of valve timing. It's been proven time after time that ...

Harley-Davidson has filed a patent application for a variable valve timing (VVT) V-twin engine, possibly for the Sportster to improve economy and reduce emissions. The iconic American manufacturer has ...

Nissan's developed a new VVT system specifically for its e-Power hybrid systems, which maximizes EGR on cold restart to minimize emissions. Could this hellp keep combustion on the map?

Ian Wright was born in England and obsessed with all things on four wheels. Now, he lives in California and writes about and photographs cars. His career path has veered between cars, including ...

Market is projected to grow steadily, rising from USD 53.0 billion in 2025 to USD 93.1 billion by 2035, reflecting a compound ...