Are there any other cycles besides the Otto cycle used in car engines?

Answer 1

The Otto cycle refers to any engine that uses the four stroke cycle - this covers most of the vehicle and machinery engines produced today.

Its power cycle consists of adiabatic compression, heat addition at constant volume, adiabatic expansion and rejection of heat at constant volume and characterized by four strokes, or reciprocating movements of a piston in a cylinder.

Two stroke engines are a deritive of the Otto cycle, but the principle is the same.

Other thermodynamic cycles are:
Brayton Cycle - for gas turbine
Lenoir Cycle - for pulse jet engines
Miller Cycle - an adaptation of the Otto cycle mainly for surercharged engines.

Kayla is correct - rotary engines are four stroke engines - so the otto cycle applies.
It must be remembered that these cycles are thermodynamic properties of the engine.

Answer 2

I believe the mazda 929 used a Miller cycle engine in 90's. Of course don't forget the Rotory used in rx7's/8's.

Answer 3

Mazda Milliena model with Miller cycle engine by Frank Miller. SAAB and DKW ised to bring in to America three cyl two stroke oil mixed with gasoline engines. As did subrau 360cc car and van in the late 1960's

Answer 4

Rotaries are still a 4-stroke combustion cycle. They just have a triangle shaped piston.

Answer 5

How quickly the "rotary" is forgotten.