US 11,725,599 B2
System and method for controlling operation of a two-stroke engine having a turbocharger
James H. Buchwitz, Roseau, MN (US); Dallas J. Blake, Roseau, MN (US); Lucas R. Salfer, Salol, MN (US); Alexander M. Hetteen, Roseau, MN (US); Reed A. Hanson, Roseau, MN (US); Darren J. Hedlund, Roseau, MN (US); Daniel E. Erickson, Labroquerie West (CA); Chad A. Dale, Roseau, MN (US); and Derek Zimney, Roseau, MN (US)
Assigned to Polaris Industries Inc., Medina, MN (US)
Filed by Polaris Industries Inc., Medina, MN (US)
Filed on Jun. 3, 2022, as Appl. No. 17/831,828.
Application 17/831,828 is a division of application No. 17/145,298, filed on Jan. 9, 2021, granted, now 11,384,697.
Claims priority of provisional application 62/960,414, filed on Jan. 13, 2020.
Prior Publication US 2022/0316412 A1, Oct. 6, 2022
Int. Cl. F02D 41/00 (2006.01); B62J 50/21 (2020.01); F01N 13/18 (2010.01); F02B 37/18 (2006.01); F02D 23/00 (2006.01); F02D 41/10 (2006.01); F02B 75/02 (2006.01)
CPC F02D 41/0007 (2013.01) [B62J 50/21 (2020.02); F01N 13/1805 (2013.01); F02B 37/186 (2013.01); F02D 23/00 (2013.01); F02D 41/10 (2013.01); F02B 2075/025 (2013.01); F02D 2200/0404 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/101 (2013.01); F02D 2200/703 (2013.01)] 3 Claims
OG exemplary drawing
 
1. A system for controlling an engine having a turbocharger comprising:
an idle determination module determining an engine speed is at idle;
a boost pressure sensor disposed downstream of the turbocharger generating a boost pressure signal when the engine speed is at idle;
a barometric pressure sensor disposed before the turbocharger generating a barometric pressure signal when the engine speed is at idle; and
a controller coupled to the boost pressure sensor and the barometric pressure sensor, said controller programmed to determine an offset between the boost pressure signal and the barometric pressure signal, to compare the offset to a tolerance range, and when the offset is outside the tolerance range, to display an indicator and operate the engine in a limp home mode.