US 12,473,866 B2
Integrated throttle—fuel mixer
Nathan Gagnon, Delafield, WI (US); Jesse Dees, West Bend, WI (US); Anthony Petcoff, West Allis, WI (US); Pauras Sawant, Waukesha, WI (US); Daniel Sherwin, Milwaukee, WI (US); and Tim Bembenek, Pewaukee, WI (US)
Assigned to Generac Power Systems, Inc., Waukesha, WI (US)
Filed by Generac Power Systems, Inc., Waukesha, WI (US)
Filed on Jan. 23, 2023, as Appl. No. 18/100,488.
Claims priority of provisional application 63/302,294, filed on Jan. 24, 2022.
Prior Publication US 2023/0235706 A1, Jul. 27, 2023
Int. Cl. F02D 19/00 (2006.01); B01F 23/213 (2022.01); B01F 25/312 (2022.01); B01F 35/21 (2022.01); B01F 35/71 (2022.01); F02B 63/04 (2006.01); F02D 19/02 (2006.01); F02M 21/02 (2006.01); F02M 21/04 (2006.01); H02K 7/18 (2006.01)
CPC F02D 19/023 (2013.01) [B01F 23/2132 (2022.01); B01F 25/312511 (2022.01); B01F 25/312531 (2022.01); B01F 35/2113 (2022.01); B01F 35/2115 (2022.01); B01F 35/718051 (2022.01); F02B 63/042 (2013.01); F02D 19/027 (2013.01); F02M 21/0233 (2013.01); F02M 21/047 (2013.01); H02K 7/1815 (2013.01); F02M 2700/123 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A fuel delivery arrangement for a generator, the fuel delivery arrangement comprising:
a throttle-mixing assembly including:
a mixer body defining a main port extending between an air inlet end and a mixed air-fuel outlet end and defining a fuel inlet port extending into the main port; and
a Venturi structure located within and sealed against the main port at a first sealed location and a second sealed location, the Venturi structure defining a fuel opening between the first and second sealed locations, the Venturi structure being configured to mix fuel received from the fuel inlet port, via the fuel opening, with air received from the air inlet end and to deliver an air-fuel mixture to an air-fuel outlet port;
a fuel control valve assembly, mounted to the mixer body, including a first valve and a first actuator arranged to control a flow of the fuel passing through the fuel inlet port; and
a throttle control valve assembly, mounted to the mixer body, including a second valve and a second actuator arranged to control a flow of the air-fuel mixture passing through the main port;
wherein the first valve is a throttle plate located within the fuel inlet port.