Emissions Legislation - The Main Driver For Adopting VVA
VVA improves legislated engine out emissions at source with no performance penalty.
Exhaust after-treatment systems also reduce emissions, but they increase fuel consumption and reduce performance.
VVA can affect engine performance with no side-effects. It can improve:
- Fuel economy
- After-treatment operation
Current legislation puts tight controls on engine emissions. Fuel consumption is also constrained, albeit to a lesser extent. The following is an overview of how emissions targets have changed since 1971:
- 1995 = 3% of 1971 levels.
- 2000 = 2% of 1971 levels.
- 2005 = 1% of 1971 levels.
- 2010 = 0.5% of 1971 levels (expected)
An approximate halving of emissions levels is anticipated at each successive round of legislation for the next 10 yrs.
Beyond 2015 it is likely that only CO2 levels will be subject to reducing legislated levels and will be covered by Fuel Economy legislation (EPA, CAFE, CARB etc).
Clean Engine Technology
Compare and contrast the various emissions standards (CSM worldwide). Click here
World Tailpipe Emissions
Take a look at when and where these emissions standards will be introduced (CSM worldwide). Click here
Legislation is specific to different automotive sectors.
Light Duty (Gasoline and Diesel)
- Passenger cars
- Light trucks
Heavy Duty (Diesel)
- Road Haulage (Trucks, Buses etc)
- Off road (JCB, earth movers etc)
Mechadyne VVA Systems Offer Solutions For All Sectors.Browse our VVA products Return to our Home Page