US 12,134,993 B2
Method for determining the mass flow in an internal combustion engine
Oliver Betz, Groebenzell (DE); and Ben Abdelkader Haithem, Puchheim (DE)
Assigned to Systec Automotive GmbH, Puchheim (DE)
Appl. No. 17/766,357
Filed by SYSTEC AUTOMOTIVE GMBH, Puchheim (DE)
PCT Filed Oct. 2, 2020, PCT No. PCT/EP2020/077720
§ 371(c)(1), (2) Date Apr. 4, 2022,
PCT Pub. No. WO2021/064207, PCT Pub. Date Apr. 8, 2021.
Claims priority of application No. 10 2019 126 783.8 (DE), filed on Oct. 4, 2019.
Prior Publication US 2023/0288240 A1, Sep. 14, 2023
Int. Cl. F02D 41/18 (2006.01); F02D 41/28 (2006.01); G01F 1/50 (2006.01); G01F 1/72 (2006.01); G01F 1/88 (2006.01); F02D 41/14 (2006.01)
CPC F02D 41/18 (2013.01) [F02D 41/28 (2013.01); G01F 1/50 (2013.01); G01F 1/72 (2013.01); G01F 1/88 (2013.01); F02D 2041/1432 (2013.01); F02D 2041/1433 (2013.01); F02D 2041/285 (2013.01)] 7 Claims
 
1. A method for determining a mass flow according to a differential pressure method on an internal combustion engine, the method comprising:
calculating a mass flow signal by using sensors of a mass flow meter of the internal combustion engine to measure a differential pressure, an absolute pressure and a temperature of a mass flow;
using an evaluator of the mass flow meter to filter the mass flow signal by matching filter parameters to measurement situations including a first measurement situation in which the filter parameters are set on a basis of an analysis of pulsations of current measured values and a second measurement situation in which the filter parameters are set on a basis of status data of the internal combustion engine transmitted by an engine control unit;
using a data bus for communication between the mass flow meter and the engine control unit; and
sending the filtered mass flow signal to the engine control unit.