Toyota says it's revamping its gas engine lineup to boost fuel economy and lower emissions.
The company has designed a new valve system for gas engines that will reduce fuel usage per mile, reduce carbon dioxide emissions and enhance performance, the company announced this week in Japan.
The valve system, called Valvematic, controls both the valve timing and valve lift in an engine, according to Toyota.
That means that a gas engine with Valvematic will adapt intake to give each cylinder as much air as necessary for ideal performance or combustion. The system varies airflow for things like engine speeds, driving habits and differing terrain, and should translate into better overall performance and fuel economy, Toyota claims.
Toyota says the system could improve fuel efficiency by 5 percent to 10 percent. The company plans to implement the new technology in all its gas car engines within the next three years.
Source: CNET News.com June 15, 2007
