Engine Operation Rotary

ENGINE FUNDAMENTAL

Engine Operation 4 stroke rotary / wankel – petrol engine

• In rotary engines, rotors spin to produce power. Two types of rotary engine 1. gas-turbine engine 2. Wankel engine

• In the gas turbine, burning air fuel mixture spins a power turbine that is geared to the vehicle wheels. Although there has been much research on ga turbines, so far no practical automotive engine has resulted

• Wankel engine has two or three rotors that spin in oval chambers. It is a rot combustion (RC) engine because the combustion chambers are in, and therefore rotate with, the rotors

• Engine operates on the four-stroke cycle. The four strokes-intake, compress power, and exhaust are going on at the same time around each rotor

ENGINE FUNDAMENTAL

Engine Operation 4 stroke rotary / wankel – petrol engine • While the engine is running (follow lobe A around) the space between A & C will expands and it automatically • generate This causes fuel mixture theair partial vacuum to fill the inside space (figure II) – intake stroke the chamber • Then, when lobe C passes the intake port, the space (A to C) is sealed off and the air fuel mixture is • At the same, space between A trapped and B inside the chamber has been greatly reduced. It has held air fuel mixture because it has done the process as a space A to C and

ENGINE FUNDAMENTAL

Engine Operation 4 stroke rotary / wankel – petrol engine • Air fuel mixture between A and B has been compressed • Now, a spark at the spark plug ignites the air fuel mixture at the space A to B. It burns and forces the rotor to turn. At the same time lobe C past the exhaust port and the exhaust gas • rush out Bfrom the the chamber As lobe passes exhaust (exhaust port, stroke) the burned mixture exhausts • The "strokes" of intake, compression, power, and exhaust follow continuously in each rotor chamber. This occurs as long as the engine runs