US 11,781,493 B2
Throttle body with fluid flow control
Gary J. Burns, Millington, MI (US); William E. Galka, Caro, MI (US); Bradley J. Roche, Millington, MI (US); Albert L. Sayers, Caro, MI (US); and David L. Speirs, Cass City, MI (US)
Assigned to Walbro LLC, Cass City, MI (US)
Filed by Walbro LLC, Cass City, MI (US)
Filed on Jan. 31, 2022, as Appl. No. 17/589,091.
Application 17/589,091 is a division of application No. 16/331,394, granted, now 11,268,455, previously published as PCT/US2017/049837, filed on Sep. 1, 2017.
Claims priority of provisional application 62/385,673, filed on Sep. 9, 2016.
Prior Publication US 2022/0145812 A1, May 12, 2022
Int. Cl. F02D 9/10 (2006.01); F16K 3/06 (2006.01); F02M 17/34 (2006.01); F02M 19/08 (2006.01)
CPC F02D 9/101 (2013.01) [F02D 9/104 (2013.01); F16K 3/06 (2013.01); F02M 17/34 (2013.01); F02M 19/08 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A throttle body, comprising:
a body having a main bore from which a fuel and air mixture is discharged for use by an engine, the main bore having an inlet side into which air flows into the main bore and an outlet side from which air and fuel exit the main bore;
a throttle valve head carried by the body and moveable between an idle position and an open position to control at least some fluid flow through the main bore;
a boost venturi open to the main bore and arranged between the throttle valve head and the outlet side of the main bore; and
a flow directing feature to alter at least one of the velocity or direction of at least a portion of the fluid that flows in the main bore and relative to the boost venturi, the flow directing feature being carried by the body separate from the throttle valve head and the boost venturi, and wherein the flow directing feature is arranged downstream of the throttle valve head and upstream of an inlet of the boost venturi, where downstream and upstream are with regard to a direction of fluid flow through the main bore.