Patent ID: 6876917

Claim:
A system for rapidly heating the temperature in an exhaust pipe of a two-stroke vehicle engine close to a predetermined target temperature, comprising: a cylinder; a piston movable in the cylinder a nd adapted to compress a fuel-air mixture to be ignited in the cylinder with exhaust gas from ignition of the fuel-air mixture being expelled from the cylinder into the exhaust pipe; an ignition source operatively coupled to the cylinder; a heating mode signal generator that generates a signal when manually activated; a sensor detecting a temperature of the exhaust gas expelled from the cylinder; and a controller operatively coupled to the ignition source, the signal generator, and the temperature sensor, the controller activating the ignition source at a particular point during the compressing movement of the piston to provide an ignition timing, and the controller setting the engine ignition timing to a maximum retarded setting to rapidly increase the exhaust gas temperature when the generator is activated, when the vehicle is stationary, and when the sensed exhaust gas temperature is less than the target temperature.