Saturn S series Twin Cam cylinder head had now featured a new roller-rocker setup with hydraulic tappets and roller cams replacing the conventional bucket lifter setup of the previous engine in the S series. Also introduced for the 1999 model year S-series vehicles that were sold in California was a different type of an exhaust manifold that housed an upstream catalytic converter (this converter had heated up much faster than the conventional unit, and it had also decreased exhaust emissions faster as well), and it also had provisions for an air-injection reaction system (This had injected fresh air into the exhaust to reduce
Exhaust heat recovery system pipe to reduce vehicles fuel consumption. Electric Turbo Compounding (ETC) is a technology solution to the challenge of improving energy efficiency for the stationary power generation industry. Fossil fuel based power generation is predicted to continue for decades, especially in developing economies. This is against the global need to reduce carbon emissions, of which, a high percentage is produced by the power sector worldwide. ETC works by making gas and diesel-powered gensets (Electric Generators) work more effectively and cleaner, by recovering waste energy from the exhaust to improve power density and fuel efficiency. Facing the new American, European, Japanese or