The technology group Wärtsilä has introduced a gas fuelled version of the successful Wärtsilä 31 engine, the Wärtsilä 31SG. This follows very positive acceptance of the diesel version in marine sector ...

A gasoline piston engine that can dynamically change its compression ratio —that is, the amount by which the piston squeezes the fuel-air mixture in the cylinder—has long been a holy grail of engine ...

Green bars are the engine efficiency. Conventional diesel on the left is 44% and the the best gas-diesel mix would be 53% efficient. Less heat trasfer and exhaust thermal losses. 1. What if an engine ...

To achieve the US Department of Energy's goal of 55% thermal efficiency, engine manufacturers will continue to bring new technologies to construction equipment Engine manufacturers are on the ...

Westport Fuel Systems Inc.'s new hydrogen HPDI fuel system technology enables heavy-duty trucks to operate on biomethane (renewable natural gas) and natural gas with the same power, torque, efficiency ...

From 11.5 mpg on diesel to 875-mile battery-electric runs, NACFE’s latest Run on Less study shows fleets that match powertrain technology to the proper duty cycle see promising results with ...

Not a huge percentage of our readers probably get their heat from diesel fuel, but it’s not uncommon in remote areas where other fuels are hard to come-by. If you’re in one of those areas, this latest ...