I just learned there are 2 cycle diesel engines.What machines use them?Also,Why does Jeep still use an in-line 6 cylinder as opposed to a V-6?
Detroit Diesel's (Penske) 53, 71, 92 and 149 series diesel engines are 2-cycle. Applications are primarily highway vehicles (semi-tractors), off-highway vehicles, marine and power generation. Electro-Motive's (Greenbriar, formerly General Motors) 567, 645 and 710 series diesel engines are 2-cycle. Applications are primarily locomotive, marine and power generation. Fairbanks-Morse (Coltec), although they no longer manufacture new 2-cycle engines, still support the 8-1/8 and 5-1/4 Opposed-Piston 2-cycle engine. Applications are primarily marine and power generation.
Many locomotives use enormous supercharged 2-stroke diesel engines. I understand that the newest Jeeps will use a V6, but the reason they stayed with the inline was that they had no reason not to use it. The engine fit, the tooling was paid for, and it worked.
Detroit diesel used 2 cycle engines in the 50's and up. They may still use them, I'm not sure. 2 cycle engines does not always mean you mix oil in the fuel. It means the engine fires every stroke, not every other stroke, (4cycle engines) The most common series I'm familiar with is the 53 and 71 series.
Detroit Diesel built 2 stroke diesel and was used in over the road trucks until early 90's when EPA pretty much clamped down on them that the engine could not pass clean air standards. There are still many running in heavy equip in the construction today. How ever they are being phased out and repowered with cleaner burning 4 stroke engines.
two stroke diesels are still in use today most of them are in the marine field powering large boats and alot are still in generators and you still see quite a few in buses. I've also seen one on a drag strip. as for the in line six vs. the v6 the jeep is well known for an excellent trail vehicle of witch torque is desired at lower rpm and the the inline engine does just that it provides ample toque for the jeeps stock size for most trails.
