US 11,898,526 B2
Fuel injector valve seat assembly including insert locating and retention features
Guenter Dantes, Eberdingen (DE); Todd Wallace Helsel, Saint Stephen, SC (US); Manoj Menon, Novi, MI (US); John Seifert, Kalkaska, MI (US); Thomas Stach, Northville, MI (US); Ryan Cary, Ferndale, MI (US); Sudhir Srinivasan, Farmington Hills, MI (US); Fabian Lischke, Keego Harbor, MI (US); Juergen Lander, Stuttgart (DE); Sebastian Wieschollek, Ann Arbor, MI (US); James Doetsch, Farmington Hills, MI (US); and Peter Glibota, Huntington Woods, MI (US)
Assigned to Robert Bosch GmbH, Stuttgart (DE)
Appl. No. 17/049,713
Filed by Robert Bosch GmbH, Stuttgart (DE)
PCT Filed Apr. 23, 2019, PCT No. PCT/EP2019/060352
§ 371(c)(1), (2) Date Oct. 22, 2020,
PCT Pub. No. WO2019/206895, PCT Pub. Date Oct. 31, 2019.
Claims priority of provisional application 62/662,330, filed on Apr. 25, 2018.
Prior Publication US 2021/0140399 A1, May 13, 2021
Int. Cl. F02M 61/16 (2006.01); F02M 61/18 (2006.01)
CPC F02M 61/168 (2013.01) [F02M 61/1853 (2013.01); F02M 61/1886 (2013.01); F02M 2200/8015 (2013.01); F02M 2200/8023 (2013.01); F02M 2200/8061 (2013.01); F02M 2200/8084 (2013.01)] 2 Claims
OG exemplary drawing
 
1. A fuel injector comprising
a fuel injector housing;
a valve seat disposed in the fuel injector housing, the valve seat including
a base that is mechanically connected to an end of the fuel injector housing and includes an inner surface, and
an insert that cooperates with the base to define a spray hole that extends between the inner surface and an exterior of the valve seat; and
a valve body disposed in the fuel injector housing and operable to move along a longitudinal axis of the fuel injector housing between a first position in which the valve body abuts the inner surface and in which fluid is prevented from passing through the spray hole, and a second position in which the valve body is spaced apart from the inner surface and in which fluid is permitted to pass through the spray hole, wherein
a surface of the insert includes surface features that engage with corresponding surface features formed on a surface of the base so as to retain the insert in a predetermined rotational orientation about the longitudinal axis relative to the base,
the insert has a polygonal peripheral shape when viewed in a cross section that is transverse to the longitudinal axis, a corner of the polygonal peripheral shape of the insert corresponding to one of the surface features of the insert, and
the insert is disposed in a vacancy of the base that has a corresponding peripheral shape, a corner of the polygonal peripheral shape of the vacancy corresponding to one of the surface features of the base.