Never seen this before. Not sure what the benefits are...
Hillman Car Club of South Australia – Commer TS3 Two Stroke Diesel Engine
Hillman Car Club of South Australia – Commer TS3 Two Stroke Diesel Engine
I remember working on some of the Detroit Diesels in the early 70's and there was a general consensus that they would not be long for this world because of tightening emissions standards, they always leaked oil, and were probably one of the noisiest motors available. The 2 strokes were considered naturally aspirated with the roots type blower, which is a necessity for scavenging on these motors, and it just adds more to break.
We used to run 4 stroke diesels like Mack and Cummins with turbos and no muffler as they were that quiet with an up-pipe.
The biggest development to come out of the high cost of fuel was the high torque rise/slow speed engines being used now that run about 1300 to 1400 rpm at highway speeds, and require 5 speed transmissions not 13 or 15 speed, many are automatics now.
The rotating mass is much lighter, goes slower, and has to turn less shafts and gears so the efficiency is way up. Electronic fuel injection just ices the cake and virtually everything is now drive-by-wire throttle.
I still would love to hear that little two stroke at full song.
Cheers
Phil
Honda had stratified-charge technology in Civics in the seventies- called CVCC. Worked very well. I don't know when they gave it up, but they sold a lot of them until they did.
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They were indeed, but were carburated not injected. They actually had a 3rd small valve that actuated it. It was basicly a small stainless bowl which had a very rich mixture, making it easier to ignite, that then spread into the main cylinder and lit the leaner mixture within the cylinder. Compared to the later injection system, just from the design of the head, it had to cost a lot more to manufacture. Since the Japanese govt. was, not sure if it still does, giving 100% tax right off every year for equipment, it was probably cost prohibitive to make in other countries without that type right off. Because of it's principles of function, I'm sure they couldn't easily meet tightening EPA standards. Overall, it was much simpler than all the components involved in a modern engines fueling systems.