GM's Next-Gen Engines: Cheaper and Fuel-Efficient
“We first introduced direct injection in North America in the 2007 Saturn Sky Red Line and the Pontiac Solstice GXP. We’ve been rolling out the technology across our portfolio as quickly as we can so that our customers will have additional fuel savings options. Direct injection is a state-of-the art engineering solution because it enables improved fuel economy and lower emissions without sacrificing power,” said Tom Stephens, executive vice president, GM Global Powertrain and Global Quality.
By developing environmentally-friendly and fuel-efficient engines, General Motors does nothing more than to comply with government's requirements which demanded Detroit 3 to design more advanced units in order to eligible for financial aid. And GM really does that, according to the same press release, as the company already owns a bunch of fuel-saving technologies installed on models available on the market.
For example, GM says that more than 3.7 million vehicles incorporate variable valve timing, 700,000 units with direct injection, 200,000 vehicles with turbocharged gas engines plus 2 million cars featuring fuel-saving six-speed transmissions.
And more importantly, GM published a thrilling forecast claiming that the company's 2009 domestic line-up (domestic cars and light trucks) will use 700 million fewer gallons of fuel than the current vehicle range, meaning that it will save between 1.4 and 2.1 billion dollars in fuel costs.