US 9,810,170 B2
Mass flow rate determination
Simon Petrovic, Aachen (DE)
Assigned to Ford Global Technologies, LLC, Dearborn, MI (US)
Filed by Ford Global Technologies, LLC, Dearborn, MI (US)
Filed on Mar. 5, 2015, as Appl. No. 14/639,722.
Claims priority of application No. 10 2014 205 578 (DE), filed on Mar. 26, 2014.
Prior Publication US 2015/0275805 A1, Oct. 1, 2015
Int. Cl. F02D 41/18 (2006.01); F02D 41/00 (2006.01); G01F 1/34 (2006.01); G01F 1/86 (2006.01); G01F 1/88 (2006.01)
CPC F02D 41/18 (2013.01) [F02D 41/0007 (2013.01); G01F 1/34 (2013.01); G01F 1/86 (2013.01); G01F 1/88 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/101 (2013.01); F02D 2200/1002 (2013.01); Y02T 10/144 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A mass flow rate sensor configured to determine a mass flow rate of an inlet air compressor of an internal combustion engine, the mass flow rate sensor comprising:
a first signal input for a revolution rate signal of the inlet air compressor;
a second signal input for an output pressure signal of the inlet air compressor;
an output for a mass flow rate signal;
a first characteristic field;
a second characteristic field, each of the first and second characteristic fields associating a mass flow rate value with a pair of values of a revolution rate value and an output pressure value respectively received via the first and the second signal inputs; and
a selection unit that comprises a first parameter input and a second parameter input, the selection unit configured to produce a selection signal depending on a pair of parameters respectively received via the first and second parameter inputs and to switch the mass flow rate value of either the first or the second characteristic field through to the output of the mass flow rate sensor depending on the selection signal, wherein the first parameter input of the selection unit is connected to a revolution rate signal of the internal combustion engine and wherein the second parameter input of the selection unit is connected to a torque signal of the internal combustion engine.