Thread: Constant Volume Combustion Engine (6-Stroke Engine)

sweet. Throw that into a hybrid automobile and you'd get such good mileage.

I still want my nuclear powered flying car though.

don't forget the "vidphone" did you ever read "safe at any speed" by Larry Niven

Originally Posted by fluffy2097

sweet. Throw that into a hybrid automobile and you'd get such good mileage.

I still want my nuclear powered flying car though.

heh, kinda like a mix between a rotary engine and a piston engine, neat! Another nice engine trick i saw was honda's new 6 cylinder engine. When it detects a cruising speed, it will actually close all of the valves on one side, stoping the pistons from moving, all to make it more effecient. I read it in Honda Tuning, i'll see if i can find an online link.

also like honda's incline sensor, when the car is cruising down hill it turns off so when you are coasting there is no gas usage (granted the engine still spins but no fuel is consumed)

Originally Posted by binary.h4x

heh, kinda like a mix between a rotary engine and a piston engine, neat! Another nice engine trick i saw was honda's new 6 cylinder engine. When it detects a cruising speed, it will actually close all of the valves on one side, stoping the pistons from moving, all to make it more effecient. I read it in Honda Tuning, i'll see if i can find an online link.

actually... comparing it to a rotary is a bit of a stretch.

rotary engines utilize no pistons, and convert rotational energy into rotational energy. the 6-stroke engine above still uses pistons, and converts the linear motion of the pistons to rotational energy. also, if im not correct, there are no valves on a rotary engine.

as for that honda engine, i think the pistons continue moving, as they are still connected to the crankshaft. the valves most likely remain closed, and the fuel injection is probably cut off to those cylinders as well...

~mike

Originally Posted by mp3z24

as for that honda engine, i think the pistons continue moving, as they are still connected to the crankshaft. the valves most likely remain closed, and the fuel injection is probably cut off to those cylinders as well...
~mike

Yeah, stopping the pistons would be bad, very bad !

sorry, i meant stop producing power, and the rotary coment, the central spinnin thing just reminded me of a rotary engine diagram

Originally Posted by mp3z24

actually... comparing it to a rotary is a bit of a stretch.

rotary engines utilize no pistons, and convert rotational energy into rotational energy. the 6-stroke engine above still uses pistons, and converts the linear motion of the pistons to rotational energy. also, if im not correct, there are no valves on a rotary engine.

as for that honda engine, i think the pistons continue moving, as they are still connected to the crankshaft. the valves most likely remain closed, and the fuel injection is probably cut off to those cylinders as well...

~mike

No moving "conventional" valves like on a piston engine, but they still have valves/ports. And newer rotarys have ports that will open/close depending on the needs of the engine, but they dont actually open per stroke.

Edit: And I dont know much about vtec, but that sounds like what binary is describing, the cam lobes lock/unlock from the camshaft to open/leave closed additional valves. So maybe the pistons lock/unlock from the drive shaft, i dont know.

VTEC engages a second longer duration camshaft. <- from my understanding. Cadillac shuts down cylinder on its North star engines by no longer actuating the valves. Don't know about Honda.