Ideal Atkinson Cycle

[The Real Maverick]

I don't know if this has been posted before. If so, it was a long time ago. I've not seen it recently.

A diagram of the Ideal Atkinson Cycle. Not specific to any vehicle. But shows an example of the theory behind it.

pressure vs. Volume inside the cylinder

6 to 2 the piston is moving up
3 to 5 the piston is moving down

1 to 2 is compression
3 to 5 is power stroke

2 is spark

The distance (ratio) from
6 to 2 and from 3 to 5 may be
"13:1" in both cases.

But really only the expansion ratio is 13:1 and the compression ratio is a more typical 9:1 as the low octane requirement for hybrid engines would suggest.

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[Robot-Wrangler]

Cylinders don't go up and down. Pistons and valves go up and down.

 

[SLINGSHOT]

Old Mazda commercial for their Wankel Rotary engine said, "Piston engines go boing, boing, boing . . . rotary engines go HMMMMM."
Piston engines still going boing. Wankel . . . going nowhere.

 

[The Real Maverick]

Old Mazda commercial for their Wankel Rotary engine said, "Piston engines go boing, boing, boing . . . rotary engines go HMMMMM."
Piston engines still going boing. Wankel . . . going nowhere.

"Boeing Boeing" is the sound tires make when they fall off passenger jets.

 

[SLINGSHOT]

"Boeing Boeing" is the sound tires make when they fall off passenger jets.

WHOOSH is the sound of doors falling off

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