System and method for controlling operation of a two-stroke engine having a turbocharger
A method and system for controlling operation of a two-stroke engine having a turbocharger includes the two-stroke engine comprising an electronically controlled exhaust valve. A throttle position sensor generates a throttle position signal corresponding to a position of a throttle plate of a throttle. A boost box is coupled to the two-stroke engine. A boost box pressure sensor is coupled to the boost box and generates a boost box pressure signal corresponding to a pressure within the boost box. A controller is coupled to the boost box pressure signal controlling a position of the electronically controlled exhaust valve in response to the boost box pressure signal and the throttle position signal.
1. A system for controlling operation of a two-stroke engine having a turbocharger comprising:
the two-stroke engine comprising an electronically controlled exhaust valve;
a throttle position sensor generating a throttle position signal corresponding to a position of a throttle plate of a throttle;
a boost box coupled to the two-stroke engine;
a boost box pressure sensor coupled to the boost box generating a boost box pressure signal corresponding to a pressure within the boost box; and
a controller coupled to the boost box pressure signal controlling a position of the electronically controlled exhaust valve in response to the boost box pressure signal and the throttle position signal.
2. The system of claim 1 wherein the controller determines an engine speed threshold, at which the exhaust valve is commanded to move.
3. The system of claim 2 wherein the engine speed threshold for exhaust valve position is determined from a table.
4. The system of claim 2 wherein the controller controls the electronically controlled exhaust valve in response to the engine speed.
5. The system of claim 2 wherein the engine speed threshold for exhaust valve position is based on a barometric pressure signal and the throttle position signal.
6. A method or controlling operation of a two-stroke engine having a turbocharger comprising:
generating a throttle position signal corresponding to a position of a throttle plate from a throttle position sensor;
generating a boost box pressure signal corresponding to a pressure within a boost box; and
controlling a position of an electronically controlled exhaust valve in response to the boost box pressure signal and the throttle position signal.
7. The method of claim 6 further comprising determining an engine speed threshold, and commanding movement of the exhaust valve at the engine speed.
8. The method of claim 7 wherein determining the engine speed threshold comprises determining the engine speed threshold for exhaust valve position from a table.
9. The method of claim 7 wherein controlling by a controller, the electronically controlled exhaust valve in response to the engine speed.
10. The method of claim 7 wherein determining the engine speed comprises determining the engine speed based on a barometric pressure signal and the throttle position signal.