US 11,703,420 B2
Method of determining acceleration of a crankshaft
Philippe Bovi, Havange (FR); Bart Schreurs, Waltzing (BE); and Michel Peters, Luxembourg (LU)
Assigned to DELPHI AUTOMOTIVE SYSTEMS LUXEMBOURG SA, Bascharage (LU)
Appl. No. 17/617,148
Filed by BorgWarner Luxembourg Automotive Systems SA, Bascharage (LU)
PCT Filed Oct. 1, 2020, PCT No. PCT/EP2020/077557
§ 371(c)(1), (2) Date Dec. 7, 2021,
PCT Pub. No. WO2021/078491, PCT Pub. Date Apr. 29, 2021.
Claims priority of application No. 1915408 (GB), filed on Oct. 24, 2019.
Prior Publication US 2022/0236143 A1, Jul. 28, 2022
Int. Cl. G01M 15/11 (2006.01); G01M 15/06 (2006.01)
CPC G01M 15/11 (2013.01) [G01M 15/06 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method of determining the acceleration of a crankshaft of an internal combustion engine comprising one or more cylinders, with respect to each combustion event, n, among a plurality of combustion events, comprising:
a) providing a signal indicative of crankshaft speed, said signal comprising a series of minima and maxima speeds with respect to each successive combustion event;
b) determining the acceleration of the crankshaft of the internal combustion engine with respect to each combustion event, n, among the plurality of combustion events, based on: an initial speed value of a minima, Min_(n) just before the combustion event, n, and a subsequent speed value of a maximum, Max (n) immediately subsequent to the combustion event, n, as well as a speed of a minima for a subsequent combustion event, Min (n+1).