Control method for controlling an air intake system which supplies air to an engine of a vehicle

A control method for controlling an air intake system (8) which supplies air to an engine (2) of a vehicle (1);

• the intake system (8) comprises a main air intake (4) coupled to an air filter (9), which is provided with a heating device (14);
• the control method comprises the steps of:
• determining a pressure difference (ΔP) between an upstream and a downstream of the air filter (9);
• determining first values of a variation speed (dΔP/dt) of the pressure difference (ΔP) between the upstream and the downstream of the air filter (9) are positive and in absolute value greater than a first threshold value (TV1) continuously for a first interval of time (A);
• in response to determining the first values of the variation speed (dΔP/dt) of the pressure difference, (ΔP) between upstream and downstream of the air filter (9) are positive, and in absolute value greater than the first threshold value (TV1) continuously for the first interval of time (A), turning on the heating device (14);
• waiting for a second interval of time (B) after turning on the heating device (14);
• after waiting the second interval of time, determining second values of the variation speed (dΔP/dt) of the pressure difference (ΔP) between the upstream and the downstream of the air filter (9) are positive for at least a given amount of time,
• in response to determining the second values of the variation speed (dΔP/dt) of the pressure difference (ΔP) between the upstream and the downstream of the air filter (9) are positive for at least the given amount of time, turning off the heating device (14) and opening a shutter device (19) of a bypass air intake (18), which is arranged downstream of the air filter (9) and through which air is taken in as an alternative to the main air intake (4) and without going through the air filter (9).

A control method for controlling an air intake system (8) which supplies air to an engine (2) of a vehicle (1);

• the intake system (8) comprises a main air intake (4) coupled to an air filter (9), which is provided with a heating device (14);
• the control method comprises the steps of:
• determining a pressure difference (AΔP) between upstream and downstream of the air filter (9);
• determining first values of a variation speed (dΔP/dt) of the pressure difference (ΔP) between an upstream and a downstream of the air filter (9) is positive and in absolute value greater than a first threshold value (TV1) continuously for a first interval of time (A);
• in response to determining the first values of the variation speed (dΔP/dt) of the pressure difference (ΔP) between the upstream and the downstream of the air filter (9) are positive, and in absolute value greater than the first threshold value (TV1) continuously for the first interval of time (A), turning on the heating device (14);
• waiting for a second interval of time (B) after turning on the heating device (14);
• and reducing the power of the heating device (14) if, after waiting for the second interval of time (B), second values of the variation speed (dΔP/dt) of the pressure difference (ΔP) between the upstream and the downstream of the air filter (9) are negative for at least a given amount of time;
• and
• after turning on the heating device, determining a third value of the variation speed (dΔP/dt) of the pressure difference (ΔP) between the upstream and the downstream of the air filter (9) is not negative or determining the third value is not less than the first values;
• and
• in response to determining the third value of the variation speed (dΔP/dt) of the pressure difference (ΔP) between the upstream and the downstream of the air filter (9) is not negative or determining the third value is not less than the first values, turning off the heating device.

A control method for controlling an air intake system (8) which supplies air to an engine (2) of a vehicle (1);

• the intake system (8) comprises a main air intake (4) coupled to an air filter (9), which is provided with a heating device (14);
• the control method comprises the steps of:
• determining a pressure difference (ΔP) between upstream and downstream of the air filter (9);
• determining first values of a variation speed (dΔP/dt) of the pressure difference (ΔP) between the upstream and the downstream of the air filter (9) is positive and in absolute value greater than a first threshold value (TV1) continuously for a first interval of time (A);
• in response to determining the first values of the variation speed (dΔP/dt) of the pressure difference (ΔP) between upstream and downstream of the air filter (9) are positive, and in absolute value greater than the first threshold value (TV1) continuously for the first interval of time (A) turning on the heating device (14);
• determining a second value of the variation speed (dΔP/dt) of the pressure difference (ΔP) between the upstream and the downstream of the air filter (9) is positive, and in absolute value greater than a second threshold value (TV2) greater than the first threshold value (TV1);
• in response to determining the second value of the variation speed (dΔP/dt) of the pressure difference (ΔP) between the upstream and the downstream of the air filter (9) is positive, and in absolute value greater than a second threshold value, (TV2) greater than the first threshold value (TV1), opening a shutter device (19) of the bypass air intake (18) arranged downstream of the air filter (9) and turning off the heating device.