US 11,881,908 B1
Intake air heating systems and methods
Steven W. Tonkin, Eden Prairie, MN (US)
Assigned to Phillips & Temro Industries Inc., Eden Prairie, MN (US)
Filed by Phillips & Temro Industries Inc., Eden Prairie, MN (US)
Filed on Oct. 17, 2022, as Appl. No. 17/967,162.
Int. Cl. H04B 3/54 (2006.01); F02M 31/13 (2006.01); G01R 27/16 (2006.01); F24H 15/25 (2022.01); G05D 23/19 (2006.01); G05D 23/24 (2006.01); F02D 41/24 (2006.01); F02D 41/28 (2006.01)
CPC H04B 3/548 (2013.01) [F02D 41/2422 (2013.01); F02M 31/13 (2013.01); F24H 15/25 (2022.01); G01R 27/16 (2013.01); G05D 23/1917 (2013.01); G05D 23/2401 (2013.01); H04B 3/542 (2013.01); F02D 2041/285 (2013.01); H04B 2203/547 (2013.01); H04B 2203/5408 (2013.01); H04B 2203/5445 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An intake air heating system for a vehicle, the system comprising:
an air heater configured to heat air in an intake system of an engine;
an air heater control module configured to selectively apply power to the air heater via a power conductor; and
a voltage sensor and communication module configured to:
measure a voltage on terminals of the air heater; and
transmit an indicator of the voltage to the air heater control module on the power conductor,
wherein the air heater control module is further configured to:
receive the indicator via the power conductor;
determine a resistance of the air heater based on the voltage on the terminals of the air heater and a current through the air heater; and
apply power to the air heater based on the resistance of the air heater.