02-24-2005, 11:59 AM
Hey guys, I'm new here...I go to VT. I'm a diesel nut and I saw this thread and had to reply.
2stroke diesels have been along for MANY years. Yes, there are small twostroke diesels. The older Detroit Diesels are all two stroke. Almost every charter/city bus made before 1985 has a 2 stroke diesel in it. They are also used extensively in boats. Detroits are designated by a great model # convention. I have a bus with a 6v92T, that means 6 cylinders, in V config, with each cylinder being 92 cubic inches, T = turbo. I have another truck with a 4-53 (inline 4, 53 ci each cylinder).
The ole detroits have a distinctive sound...usually it's the assoicated blower whine (they need a supercharger to work). In the late 80's detroit came out with the series 60, which is 4 stroke. It is the most prevelent engine in OTR (Over the road) trucks. 12.7 or 13.8 liters i think. The 2 strokes were used up until recently in boats.
What killed the 2 strokes is emission requirements. However, there are THOUSANDS of these engines around, and parts will be available for many years to come.
Now, BIGASS lowspeed diesels like the one pictured are used in ships. The operate around 100rpm and are directly connected to the propellar (read: no transmission). To go in reverse, the engine is run in reverse. These engines are amazing and approaches 50% efficiency due to their low speed and massive size.
That's enough from me for now (I get easilly excited when it comes to diesels).
check out some pics I took of a ship engine.
<!-- w --><a class="postlink" href="http://www.hurthing.com/day3">www.hurthing.com/day3</a><!-- w -->
2stroke diesels have been along for MANY years. Yes, there are small twostroke diesels. The older Detroit Diesels are all two stroke. Almost every charter/city bus made before 1985 has a 2 stroke diesel in it. They are also used extensively in boats. Detroits are designated by a great model # convention. I have a bus with a 6v92T, that means 6 cylinders, in V config, with each cylinder being 92 cubic inches, T = turbo. I have another truck with a 4-53 (inline 4, 53 ci each cylinder).
The ole detroits have a distinctive sound...usually it's the assoicated blower whine (they need a supercharger to work). In the late 80's detroit came out with the series 60, which is 4 stroke. It is the most prevelent engine in OTR (Over the road) trucks. 12.7 or 13.8 liters i think. The 2 strokes were used up until recently in boats.
What killed the 2 strokes is emission requirements. However, there are THOUSANDS of these engines around, and parts will be available for many years to come.
Now, BIGASS lowspeed diesels like the one pictured are used in ships. The operate around 100rpm and are directly connected to the propellar (read: no transmission). To go in reverse, the engine is run in reverse. These engines are amazing and approaches 50% efficiency due to their low speed and massive size.
That's enough from me for now (I get easilly excited when it comes to diesels).
check out some pics I took of a ship engine.
<!-- w --><a class="postlink" href="http://www.hurthing.com/day3">www.hurthing.com/day3</a><!-- w -->
I feel more like i do now than I did before.