So I've got an idea about engines for cars using the Atkinson cycle (mostly petrol-electric hybrids). I can't fit it all here so I'll post it to the comments.
If you’re not familiar with the Atkinson cycle, it’s essentially a valve timing with a delayed close of the intake valves (during compression stroke) resulting in a “longer” intake stroke, and accomplishing all four strokes in just one turn of the crank. The resulting engine has a high fuel efficiency, but low power leading to it’s use coupled with an electric engine. Wouldn’t a turbocharger solve it’s problem of lack of power? and not just for the obvious reason. one of the flaws with the extended valve opening is that some of the intake air blows back through the valve. with a turbo, wouldn’t the increased induction force stop the blowback, and result in an even more effective, but not much less efficient engine?
I think you are guessing quite right here, i don`t want to talk about the possible efficience of an engine that dosen“t exist, but i see one big problem with this engine. You are creating 3 spots of moving in this engine all very close and all at different rpm, so i think at high rpm, like a lot, it could just fall into pieces aaaannnd game over. Sorry for my english sir
Sorry to burst your bubble, but I believe forced induction has already been done on many cars, like the Mazda Millenia, supercharged v6.
This is a pretty interesting way to get a longer intake stroke, the only way it would ever work is in a tractor engine or something like it that hangs around under 1000 rpm
Comments
If you’re not familiar with the Atkinson cycle, it’s essentially a valve timing with a delayed close of the intake valves (during compression stroke) resulting in a “longer” intake stroke, and accomplishing all four strokes in just one turn of the crank. The resulting engine has a high fuel efficiency, but low power leading to it’s use coupled with an electric engine. Wouldn’t a turbocharger solve it’s problem of lack of power? and not just for the obvious reason. one of the flaws with the extended valve opening is that some of the intake air blows back through the valve. with a turbo, wouldn’t the increased induction force stop the blowback, and result in an even more effective, but not much less efficient engine?
I think you are guessing quite right here, i don`t want to talk about the possible efficience of an engine that dosen“t exist, but i see one big problem with this engine. You are creating 3 spots of moving in this engine all very close and all at different rpm, so i think at high rpm, like a lot, it could just fall into pieces aaaannnd game over. Sorry for my english sir
Sorry to burst your bubble, but I believe forced induction has already been done on many cars, like the Mazda Millenia, supercharged v6.
This is a pretty interesting way to get a longer intake stroke, the only way it would ever work is in a tractor engine or something like it that hangs around under 1000 rpm