Patent ID: 9151737
Filing Date: 2015-10-06
Classification: F02D,G01N

Abstract:
1. A method for calibrating a tank ventilation system sensor configured to detect a concentration of hydrocarbons in a fluid in a fluid line for an internal combustion engine with an intake section having a hydrocarbon storage device and a valve, the valve and the sensor arranged in the fluid line configured to couple the hydrocarbon storage device to the intake section, the method comprising: detecting a value for the concentration of hydrocarbons by the sensor when the valve is open; at least one of detecting and determining a mass flow of the fluid flowing through the fluid line into the intake section when the valve is open; determining an air/fuel ratio of an air/fuel mixture supplied to the internal combustion engine for combustion purposes when the valve is open; determining an estimated value for the concentration of hydrocarbons in the fluid line as a function of the mass flow of the fluid and the air/fuel ratio; and calibrating the sensor as a function of the detected value for the concentration of hydrocarbons and the estimated value for the concentration of hydrocarbons.