Some diesel engines sputtered and quit as their fuel filters became plugged with unknown, slimy gunk.
In the developed world, the greatest source of particulate matter is from diesel engines.
The double-decker buses have climate control, free wi-fi and hybrid electric-diesel engines to save fuel.
As a result, many of the least thirsty cars now on the road have diesel engines.
One thing hasn't: Cummins Engine, the world's biggest maker of heavy-duty diesel engines, still doesn't make money.
The emission reductions have thus resulted mainly from improvements to the efficiency of petrol and diesel engines.
And many large, important industries like trucks, diesel engines and wheel loaders are dominated by local players.
Many branch lines use diesel engines and the Harlem-Hudson line uses a third rail system to draw power.
He says that discrepancy is precisely why Audi is pursuing diesel engines more fervently than hybrid tech.
It's a 50-foot Carver 506 built in 2001 with Cummins twin diesel engines.
The feather-bedding that required firemen on diesel engines into the 1970s is gone, and most on-board personnel work hard.
Diesel engines can run on any mixture of petroleum or biodiesel from B5 to B100(100% biodiesel), with no modifications.
In other words, when the pedal hits the metal, the engine generates only about 75% of conventional diesel engines.
Reducing Harmful Emissions From Diesel Engines: The United States consumed about 50 billion gallons of diesel fuel in 2006.
Every year, China produces approximately 50 million gasoline and diesel engines for transportation.
The catch is that gasoline engines generate fewer harmful emissions than diesel engines.
Those engines typically have less than half the overall efficiency of diesel engines.
It recently signed deals to produce diesel engines with Cummins, transmissions with ZETF of Germany and trucks with Leyland.
Ironically, despite their reputation of being dirty, diesel engines actually produce one-third less greenhouse gases than their petrol equivalents.
In France, Italy and Spain, up to 70% of all executive cars sold have diesel engines, Mr Makowski said.
However, as petrol and diesel engines are also improving, the relationships between the different types of vehicles are not constant.
Urea injection, which helps catalytic converters clean up the exhaust of diesel engines, sounds like a pain in the neck.
That dominance is threatened by tightening emissions regulations governing nitrogen oxides and particulate matter--emissions that plague diesel engines in particular.
Because diesel engines are more fuel-efficient than gasoline engines, the use of diesel fuel is expected to continue to expand.
Its engine and machinery business carries out the manufacture of diesel engines, propellers and crankshafts, industrial robots, pumps and others.
And these same advances are being exploited in a new generation of diesel engines for use in small fixed-wing aircraft.
The Germans have been convinced too by technological advances which show that the quality of diesel engines has improved dramatically.
Indonesia, in turn, will be building Toyota vehicles, too--70, 000 sport utility vehicles a year (some with diesel engines made in Thailand).
This fall, it will begin selling three SUV models with advanced diesel engines: the ML320 Bluetec, R320 Bluetec and GL320 Bluetec.
In the railroad industry, it took decades to get rid of coal-shovelers, holdover from steam locomotives, from the cabs of diesel engines.
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