Engine Operation Rotary
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UNI-KL MALAYSIA FRANCE INSTITUTE AUTOMOTIVE MAINTENANCE TECHNOLOGY SUBJECT: Engine Fundamental
TITLE: Engine Operation – Rotary engine
ROTARY ENGINES •
In rotary engines, rotors spin to produce power. Two types of rotary engines are the gas-turbine engine and the 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 gas turbines, so far no practical automotive engine has resulted.
•
Only the Wankel engine is now used in passenger cars.
•
Wankel engine has two or three rotors that spin in oval chambers. It is a rotary combustion (RC) engine because the combustion chambers are in, and therefore rotate with, the rotors.
•
The engine operates on the four-stroke cycle. The four strokes-intake, compression, power, and exhaust are going on at the same time around each rotor.
UNI-KL MALAYSIA FRANCE INSTITUTE AUTOMOTIVE MAINTENANCE TECHNOLOGY SUBJECT: Engine Fundamental
TITLE: Engine Operation – Rotary engine
OPERATION •
While the engine is running (follow lobe A around) the space between A and C will expands and it automatically generate the partial vacuum inside the chamber.
•
This causes air fuel mixture to fill the space (figure II) – intake stroke
•
Then, when lobe C passes the intake port, the space (A to C) is sealed off and the air fuel mixture is trapped inside the chamber.
•
At the same, space between A and B has been greatly reduced. It has held air fuel mixture because it has done the process as a space A to C and space B to C is combustion process.
•
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 from the chamber (exhaust stroke).
•
As lobe B passes the exhaust port, 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.
TITLE: Engine Operation – Rotary engine
ROTARY ENGINES •
In rotary engines, rotors spin to produce power. Two types of rotary engines are the gas-turbine engine and the 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 gas turbines, so far no practical automotive engine has resulted.
•
Only the Wankel engine is now used in passenger cars.
•
Wankel engine has two or three rotors that spin in oval chambers. It is a rotary combustion (RC) engine because the combustion chambers are in, and therefore rotate with, the rotors.
•
The engine operates on the four-stroke cycle. The four strokes-intake, compression, power, and exhaust are going on at the same time around each rotor.
UNI-KL MALAYSIA FRANCE INSTITUTE AUTOMOTIVE MAINTENANCE TECHNOLOGY SUBJECT: Engine Fundamental
TITLE: Engine Operation – Rotary engine
OPERATION •
While the engine is running (follow lobe A around) the space between A and C will expands and it automatically generate the partial vacuum inside the chamber.
•
This causes air fuel mixture to fill the space (figure II) – intake stroke
•
Then, when lobe C passes the intake port, the space (A to C) is sealed off and the air fuel mixture is trapped inside the chamber.
•
At the same, space between A and B has been greatly reduced. It has held air fuel mixture because it has done the process as a space A to C and space B to C is combustion process.
•
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 from the chamber (exhaust stroke).
•
As lobe B passes the exhaust port, 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.
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