US 12,473,867 B2
Internal combustion engine transient response
Fady A. Megally, Zionsville, IN (US); and Chad Koci, Washington, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Apr. 4, 2024, as Appl. No. 18/627,316.
Prior Publication US 2025/0314212 A1, Oct. 9, 2025
Int. Cl. F02D 41/00 (2006.01); F02D 9/04 (2006.01)
CPC F02D 41/0007 (2013.01) [F02D 9/04 (2013.01); F02D 41/005 (2013.01)] 18 Claims
OG exemplary drawing
 
1. An auxiliary system for controlling an enthalpy of air to a turbine of a turbocharger of an internal combustion engine comprising:
a motive air device configured to receive at least some of the air and produce an airflow of the at least some of the air;
an auxiliary heat source in selective fluid communication with the motive air device and configured to heat the airflow; and
a controller configured to control operation of the auxiliary heat source and control the airflow to the turbine based upon at least one of a temperature, a pressure and a mass flow rate of the air upstream of or downstream from the turbine, and further configured to determine the enthalpy of the air upstream or downstream of the turbine, and wherein the air is a combined airflow including an exhaust airflow from the internal combustion engine and the airflow from the motive air device.