US 12,297,738 B1
Rotary engine and cooling systems thereof
Etienne Plamondon, Candiac (CA); Thomas Trevor Ricci, Pointe-Claire (CA); Jeremie Barberger, Montreal (CA); and Michel Bousquet, Longueuil (CA)
Assigned to PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed by PRATT & WHITNEY CANADA CORP., Longueuil (CA)
Filed on Jan. 8, 2024, as Appl. No. 18/406,652.
Int. Cl. F01C 21/06 (2006.01); F01C 1/22 (2006.01); F02B 53/00 (2006.01); F02B 55/10 (2006.01)
CPC F01C 21/06 (2013.01) [F01C 1/22 (2013.01); F02B 55/10 (2013.01); F02B 2053/005 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A rotary engine, comprising:
housings secured to one another and conjointly defining a rotor cavity, the housings defining respective coolant passages fluidly connected in parallel to a source of coolant;
a rotor rotationally received within the rotor cavity; and
a cooling system including:
a flow regulating device in fluid communication with the respective coolant passages;
a heat exchanger facilitating heat exchange between the coolant and a heat-transfer medium; and
a controller operatively connected to the flow regulating device, the controller having a processing unit operatively connected to a computer-readable medium having instructions stored thereon and executable by the processing unit to:
determine, based on an engine parameter and an environment parameter of the rotary engine, a flow rate of the coolant to be injected towards the respective coolant passages to maintain the housings within a temperature range, the engine parameter indicative of a quantity of heat generated by the rotary engine, the environment parameter indicative of a quantity of heat the heat exchanger is able to transfer to the heat-transfer medium; and
cause the coolant to flow towards the respective coolant passages at the flow rate.