US 11,655,750 B2
Vehicle engine flushing machine with heating and reverse flow
Frank Casale, Compton, CA (US); Dave Werthmann, Compton, CA (US); and Jeff Romero, Compton, CA (US)
Assigned to Norco Industries, Inc., Compton, CA (US)
Filed by Norco Industries, Inc., Compton, CA (US)
Filed on Sep. 7, 2021, as Appl. No. 17/468,570.
Claims priority of provisional application 62/706,750, filed on Sep. 8, 2020.
Prior Publication US 2022/0074340 A1, Mar. 10, 2022
Int. Cl. F01P 11/06 (2006.01)
CPC F01P 11/06 (2013.01) [F01P 2011/063 (2013.01); F01P 2011/065 (2013.01); F01P 2025/08 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A fluid exchange machine for introducing cleaning fluid into a vehicle engine's component while the vehicle engine is off, comprising:
a housing;
a controller in the housing;
a fluid system having a fluid tank, a pump disposed in the fluid tank, and fluid heating element disposed in the fluid tank; and
a three way valve connecting the pump, the fluid tank, and a vehicle engine's cooling system; and
wherein the fluid system includes a first path from the pump through the three way valve and back to the fluid tank, and a second path from the pump to the three way valve to the vehicle engine's component and then back to the fluid tank; and
wherein the fluid exchange machine operates using the first path while a fluid temperature is below a designated temperature, and operates using the second path when the fluid temperature is at or above the designated temperature.