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For the new engine which fuel economy output improves, reduces CO2 dynamic valve gear development
:: 13 June, 2007
It announced that the Toyota Motor Corporation fuel economy and output improved on the 12th, in comparison with until recently, developed the dynamic valve gear “valve matic” for the new engine which promotes CO2 reduction. In the former continual variable valve timing mechanism which changes the opening and closing timing of the engine inhalation valve continually, the mechanism which changes the valve lift quantity continually was combined anew.
In order to adjust the air quantity which the valve matic adjusted so far at the opening and closing quantity of the throttle valve and flows, with the change of the lift quantity of the inhalation valve the mechanism was changed. Because of this, it controlled optimumly the lift quantity and opening and closing timing of the inhalation valve according to operational state, low improvement of fuel economy and power efficiency it succeeded in being compatible. In case of the 2.0L engine, you say that you can anticipate the fuel economy improvement and CO2 reduction of the 5~10% and the output improvement of 10% or more. In addition, also the responsiveness for accelerator operation improved.
At the same company this technology, the 2.0L engine which in the future is loaded onto the new model of sale schedule we assume that consecutively it keeps expanding adoption to the start.
News Inside News;
The valve matic of new development being able to apply the quantity of the air which flows, to the opening and closing quantity of the former throttle valve, is something which metering is done with the change of the lift quantity of the inhalation valve, the lift quantity and opening and closing time of the inhalation valve is the mechanism which it continues controls in the stepless floor.
Because of this, it controls optimumly the lift quantity and opening and closing timing of the inhalation valve according to operational state, low has been compatible the improvement of fuel economy and power efficiency.
Concretely, in case of the 2.0L engine of new development, asfuel economy improvement and CO2 reduction of the 5~10% and output improvement of 10% or more are assured, it has improved the responsiveness for accelerator operation.
Toyota, from combining, as social responsibility of enterprise, correspondence to terrestrial environmental preservation and energy diversification one of most important topics of management and positioning, low has promoted the gasoline engine and the development of the transmission as the link which pursues the cleanliness conversion of the CO2 reduction and with fuel economy exhaust, it is the plan that it is renovated by 2010.
The latest valve matic is the new technology which contributes to the further evolution of the gasoline engine, the 2.0L engine which soon is loaded onto the new model of sale schedule consecutively it keeps expanding adoption to the start.
*1 VVT-i: Variable Valve Timing-intelligent (continual variable valve timing mechanism)
*2 VALVEMATIC: Valvetrain (the dynamic valve) with ~matic (mechanism) the coined word which is combined
*3 It differs depending upon operating condition
Release link: http://www.toyota.co.jp/jp/news/07/Jun/nt07_027.html
Tags: fuel economy , Variable Valve , timing mechanism , 2.0L engine , gasoline engine ,
