US 12,442,343 B2
Method for estimating the atmospheric pressure of an internal combustion engine
Xavier Moine, Toulouse (FR)
Assigned to Vitesco Technologies GmbH, Regensburg (DE)
Appl. No. 18/701,396
Filed by Vitesco Technologies GmbH, Regensburg (DE)
PCT Filed Oct. 10, 2022, PCT No. PCT/EP2022/078092
§ 371(c)(1), (2) Date Apr. 15, 2024,
PCT Pub. No. WO2023/072565, PCT Pub. Date May 4, 2023.
Claims priority of application No. 2111381 (FR), filed on Oct. 27, 2021.
Prior Publication US 2025/0243822 A1, Jul. 31, 2025
Int. Cl. F02D 41/18 (2006.01)
CPC F02D 41/18 (2013.01) 11 Claims
OG exemplary drawing
 
1. A method for determining an atmospheric pressure for a combustion engine comprising at least one cylinder supplied with air by an intake device comprising a throttle valve, at least one air intake valve admitting air into said cylinder, and a pressure sensor measuring a pressure prevailing between said throttle valve and said at least one intake valve, said method:
measuring a first pressure supplied by said pressure sensor at a given angular position of the engine,
from the measured pressure and other parameters including an engine speed and/or a position of said throttle valve, determining an estimated value for the atmospheric pressure,
measuring a second pressure supplied by the pressure sensor at a predetermined time interval after the measuring of the first pressure, wherein said time interval corresponds to an odd-numbered multiple of a half-period of a pressure pulsation that said pressure sensor may experience as air is admitted into the engine, and
wherein an average pressure corresponding to a mean of the first pressure and of the second pressure is used, with the other parameters, to determine the atmospheric pressure.