US 11,932,084 B2
Method for determining a level of refrigerant charge in a cooling circuit of an air-conditioning system and module for detecting leaks
Domenico Palmisano, Marcq en Baroeul (FR)
Assigned to FAIVELEY TRANSPORTATION NSF, Neuville-en-Ferrain (FR)
Appl. No. 17/419,615
Filed by Faiveley Transport NSF, Neuville-en-Ferrain (FR)
PCT Filed Dec. 27, 2019, PCT No. PCT/FR2019/053304
§ 371(c)(1), (2) Date Dec. 24, 2021,
PCT Pub. No. WO2020/141279, PCT Pub. Date Jul. 9, 2020.
Claims priority of application No. 1874408 (FR), filed on Dec. 31, 2018.
Prior Publication US 2022/0134844 A1, May 5, 2022
Int. Cl. B60H 1/32 (2006.01)
CPC B60H 1/3225 (2013.01) [B60H 1/3222 (2013.01); B60H 1/3227 (2013.01); B60H 2001/3238 (2013.01); B60H 2001/3248 (2013.01); B60H 2001/3255 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method comprising:
determining a mass flow rate of a refrigerant contained in a cooling circuit of an air-conditioning system, the mass flow rate determined based in part on a measurement of a power supply voltage of a compressor of the air-conditioning system; and
determining a total quantity of the refrigerant contained in the cooling circuit solely based on data internal to the air-conditioning system including the mass flow rate of the refrigerant.