Method and system for compensating for alcohol concentration in fuel

摘要

An engine system for determining an alcohol concentration in fuel is disclosed. In one example, engine throttle position, fuel pulse width, and air-fuel ratio form a basis for determining alcohol concentration of a fuel combusted in an engine. The system and its related method may improve engine operation in conjunction with detecting an alcohol concentration of a fuel.

主权项

1. An engine system, comprising:
an engine; a first actuator coupled to the engine; a second actuator coupled to the engine; an exhaust gas oxygen sensor located in an exhaust passage of the engine; and a controller including instructions to adjust the first or second actuator in response to an alcohol concentration of a fuel combusted by the engine, the alcohol concentration based on the first actuator, the exhaust gas oxygen sensor, and a speed of the engine.