| Copyright © Silver Fern Performance 2015 | Unit 10, Parkway Business Centre, Sixth Avenue, Deeside Industrial Park, Flintshire CH52LD |4

Rotary

What makes a Rotary engine special?

A rotary engine is an internal combustion engine, like the engine in your car, but it works in a completely different way than the conventional piston engine. In a piston engine, the same volume of space (the cylinder) alternately does four different jobs intake, compression, combustion and exhaust. A rotary engine does these same four jobs, but each one happens in its own part of the housing. It's kind of like having a dedicated cylinder for each of the four jobs, with the piston moving continually from one to the next. The rotary engine (originally conceived and developed by Dr. Felix Wankel) is sometimes called a Wankel engine, or Wankel rotary engine. It was patented in 1929 by Felix Wankel and licensed and developed by many companies, but only Mazda stuck with the engine. It's an elegantly simple design: A three-lobed rotor rotates inside a peanut-shaped (the technical term is epitrochoid) housing. The four engine "strokes"— intake, compression, power and exhaust—occur between the rotor's outer edge and the housing. There are no valves, as the gases enter and exit through ports in the housing. Rotaries are naturally smooth since there's no reciprocating motion as in a piston engine, just a buttery flow of power as they climb the rev range. They're about one-third smaller than a conventional engine of similar power, and modular. If you want more power, it's relatively easy to add another rotor and housing (the RX-8 uses two rotors, but Mazda's 1991 Le Mans–winning race car used four). What's the downside? The seals at the rotor apex aren't as robust as piston rings, so these engines are challenged to meet high-mileage emissions requirements. And they tend to be thirsty. Mazda says the rotary will return, and we hope that's true. Running an RX-8 through the gears is an experience that's not soon forgotten.
Tel: 01244288216 Email: info@silverfernperformance.co.uk
Silver Fern Performance “Rotary Engine and Performance Specialists” Home Rotary Services and Products Pricing News Gallery Contact Rotary
| Copyright © Silver Fern Performance 2015 | Unit 10, Parkway Business Centre, Sixth Avenue, Deeside Industrial Park, Flintshire CH52LD |4

Rotary

What makes a Rotary engine special?

A rotary engine is an internal combustion engine, like the engine in your car, but it works in a completely different way than the conventional piston engine. In a piston engine, the same volume of space (the cylinder) alternately does four different jobs intake, compression, combustion and exhaust. A rotary engine does these same four jobs, but each one happens in its own part of the housing. It's kind of like having a dedicated cylinder for each of the four jobs, with the piston moving continually from one to the next. The rotary engine (originally conceived and developed by Dr. Felix Wankel) is sometimes called a Wankel engine, or Wankel rotary engine. It was patented in 1929 by Felix Wankel and licensed and developed by many companies, but only Mazda stuck with the engine. It's an elegantly simple design: A three-lobed rotor rotates inside a peanut-shaped (the technical term is epitrochoid) housing. The four engine "strokes"— intake, compression, power and exhaust—occur between the rotor's outer edge and the housing. There are no valves, as the gases enter and exit through ports in the housing. Rotaries are naturally smooth since there's no reciprocating motion as in a piston engine, just a buttery flow of power as they climb the rev range. They're about one-third smaller than a conventional engine of similar power, and modular. If you want more power, it's relatively easy to add another rotor and housing (the RX-8 uses two rotors, but Mazda's 1991 Le Mans–winning race car used four). What's the downside? The seals at the rotor apex aren't as robust as piston rings, so these engines are challenged to meet high-mileage emissions requirements. And they tend to be thirsty. Mazda says the rotary will return, and we hope that's true. Running an RX-8 through the gears is an experience that's not soon forgotten.
Tel: 01244288216 Email: info@silverfernperformance.co.uk
Silver Fern Performance “Rotary Engine and Performance Specialists” Home Rotary Products Store News Gallery Contact Rotary