Motor vehicle heating and/or air conditioning device comprising a pollution sensor
AssigneeValeo Climatisation
InventorsNathalie Lemaitre, Stéphane Pernet
Life of this patent
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Abstract
In a motor vehicle heating or air conditioning device, a pollution sensor for detecting a pollutant, particularly carbon monoxide, in an airflow sent into the passenger compartment of the motor vehicle is arranged downstream of an air filter. The pollution sensor detects the presence of pollutant in the filtered airflow and supplies pollution measurements of the filtered airflow. The sensor is linked to a control circuit acting on an air intake flap to supply the passenger compartment with a mixture of external air from outside the passenger compartment and/or recirculated air from the passenger compartment, depending on the pollution measurement results.
Claims22
A device for heating and/or air conditioning the passenger compartment of a motor vehicle with an airflow, the device comprising
- an air filter for receiving external air from outside the passenger compartment;
- an air intake chamber downstream of the air filter, the air intake chamber including
- a first intake for external air that has been filtered,
- a second intake for recirculated air from inside the passenger compartment, and
- an intake flap able to selectively control the first intake and the second intake in order to supply the passenger compartment with external air and/or with recirculated air;
- and
- a pollution sensor suitable for measuring a pollutant in the airflow supplied to the passenger compartment and issuing a control signal for adjusting the intake flap in response to the pollutant that has been measured, the pollution sensor arranged downstream of the air filter to measure the pollutant in the external air that has been filtered.
A device for heating and/or air conditioning the passenger compartment of a motor vehicle with an airflow, the device comprising
- an air filter;
- a pollution sensor suitable for detecting the presence of a pollutant in the airflow sent into the passenger compartment and for issuing a control signal, wherein the pollution sensor is arranged downstream of the air filter, so as to detect the presence of a pollutant in the airflow that has been filtered, and
- an air intake chamber equipped with
- an intake for external air,
- an intake for recirculated air, and
- an air intake flap able to control said external air intake and said recirculated air intake selectively in order to supply the passenger compartment with external air and/or with recirculated air in response to the control signal issued by the pollution sensor,
- wherein the air filter and the pollution sensor are placed upstream of the air intake flap.
A device for providing a passenger compartment of a motor vehicle with an airflow, said device comprising
- an air filter having an upstream end and a downstream end, said air filter in communication at said upstream end with external air exterior to the passenger compartment, said air filter providing filtered air at said downstream end;
- a pollution sensor arranged downstream of said air filter, said pollution sensor detecting the presence of a pollutant in said filtered air and issuing a control signal;
- and
- an air intake chamber arranged downstream of said pollution sensor and in communication with said the passenger compartment, said air intake chamber including
- a filtered air intake for receiving said filtered air,
- an recirculated air intake for receiving recirculated air from the passenger compartment, and
- an air intake flap able to selectively block said filtered air intake and said recirculated air intake in order to supply the passenger compartment with said filtered air and/or said recirculated air in response to said control signal.
A method of providing an airflow from an air chamber having a first inlet, second inlet, a flap and an outlet a passenger compartment of a motor vehicle, the method comprising the steps of:
- providing external air from outside the passenger compartment to a filter;
- filtering said external air to obtain filtered air;
- measuring a pollution content of said filtered air;
- providing said filtered air to said first inlet of said air chamber;
- providing recirculated air from inside the passenger compartment to said second inlet of said air chamber;
- adjusting said flap of said air chamber to block at least partially said first inlet and/or said second inlet in response to the pollution content that has been measured;
- providing said airflow to the passenger compartment from said outlet of said air chamber.
Dependencies are inferred from the claim text.