US 11,781,497 B1
Diesel particulate filter (DPF) backpressure sensor as altitude sensor
James Goodsell, Lakeville, MN (US); and Adam B Carey, Cottage Grove, MN (US)
Assigned to Thermo King LLC, Minneapolis, MN (US)
Filed by THERMO KING LLC, Minneapolis, MN (US)
Filed on Jun. 7, 2022, as Appl. No. 17/834,308.
Int. Cl. F02D 35/00 (2006.01); F01N 3/02 (2006.01); F01N 3/023 (2006.01); F01N 9/00 (2006.01)
CPC F02D 35/0015 (2013.01) [F01N 3/023 (2013.01); F01N 9/002 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A transport power system comprising:
a prime mover separate from and independent to a vehicle engine used for operating a vehicle;
an absolute pressure sensor configured to sense an absolute pressure; and
a controller configured to communicate with the prime mover and the absolute pressure sensor,
wherein the controller is configured to:
determine an altitude of the transport power system with respect to sea level based on a first absolute pressure sensed by the absolute pressure sensor during a start-up sequence of the transport power system prior to running of the prime mover,
determine a power output of the prime mover,
adjust a power output upper limit for the prime mover based on the determined altitude,
compare the power output of the prime mover and the adjusted power output upper limit,
operate the prime mover of the transport power system so as not to exceed the adjusted power output upper limit.