How does the Rotax power valve work?
How does the Rotax power valve work?
The 125cc Rotax MAX EVO engine uses an Electronic Timed Exhaust Valve System. With opening and closing triggered by the engine’s ECU, crankcase pressure is used to open the valve (for top end performance) and the spring external to the exhaust valve closes it (for bottom-end performance).
What does a power valve do?
The purpose of the power valve is to improve part-throttle drivability, air-fuel ratio, and fuel mileage. As the throttle opens and the load increases, the manifold vacuum will drop. At a calibrated point, a spring inside the power valve will overcome the low manifold vacuum and open the valve.
Is a 125cc go-kart fast?
125cc karts typically reach between 70mph and 80mph. Weather conditions, track layout and tire usage will all contribute to the speed of a go-kart on a track. Different levels of engine horsepower are another factor in the top speeds of these karts.
What happens when a power valve is blown?
Problems: The incorrect size power valve, or a blown out power valve can cause problems such as poor fuel economy, black smoke emanating from your exhaust, dark or fouling spark plugs and a poor idle. If you suspect that your carburetor has a blown-out power valve, you can perform this simple test.
What kind of exhaust does a Rotax Max Evo have?
The 125cc Rotax MAX EVO engine uses an Electronic Timed Exhaust Valve System. With opening and closing triggered by the engine’s ECU, crankcase pressure is used to open the valve (for top end performance) and the spring external to the exhaust valve closes it (for bottom-end performance).
How much does a senior Max EVO engine weigh?
125 Senior MAX evo Race Class Leisure / Club / national or international Maximum Performance 22 kW / 30 hp at 11.500 rpm Maximum Torque 21 Nm at 9.000 rpm Weight bare engine: 12,0 kg / 26,5 lbs with complete power pack: 23,1 kg / 51,0 lbs
Why has the Dellorto ignition system been unified for the 125 MAX Evo?
It was not possible to integrate the electronic timing for the exhaust valve into the Denso ignition unit. Therefore, the new Dellorto Ignition System has been unified for the 125 MAX EVO Engine Series. Q: Does the new Dellorto Ignition System provide greater engine performance?
