US 12,231,010 B2
Methods and apparatus to control engine speed of a power system
Alan F. Smith, Fremont, WI (US); and Richard Joyce, Sherwood, WI (US)
Assigned to Illinois Tool Works Inc., Glenview, IL (US)
Filed by Illinois Tool Works Inc., Glenview, IL (US)
Filed on Nov. 30, 2023, as Appl. No. 18/525,650.
Application 18/525,650 is a continuation of application No. 16/513,122, filed on Jul. 16, 2019, granted, now 11,848,592.
Claims priority of provisional application 62/699,401, filed on Jul. 17, 2018.
Prior Publication US 2024/0097543 A1, Mar. 21, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. F02D 29/04 (2006.01); B23K 9/10 (2006.01); B23K 9/167 (2006.01); B23K 9/32 (2006.01); H02K 11/27 (2016.01); H02K 29/14 (2006.01)
CPC H02K 29/14 (2013.01) [B23K 9/1075 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A power system, comprising:
an engine;
a generator coupled to the engine and configured to generate an AC auxiliary output based on a speed of the engine;
an air compressor configured to generate and store air pressure in an air storage tank based on mechanical power provided by the engine; and
control circuitry configured to:
monitor the air pressure in the air storage tank;
determine a rate of air pressure change based on the monitoring of the air pressure;
in response to the rate of air pressure change satisfying a threshold rate, incrementally increasing the speed of the engine;
detecting a load on the AC auxiliary output; and
in response to detecting the load on the AC auxiliary output, overriding an engine speed that is set based on the air compressor by controlling the speed of the engine to be a predetermined speed to output a predetermined frequency.