US 12,065,992 B2
Intake runner for gaseous fuel engine, system, and method
Jaswinder Singh, Dunlap, IL (US); Michael Bardell, Vail, AZ (US); Yongxian Gu, West Lafayette, IN (US); Eric L. Schroeder, Germantown Hills, IL (US); and Patrick J. Seiler, Peoria, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Jan. 23, 2023, as Appl. No. 18/100,009.
Prior Publication US 2024/0247622 A1, Jul. 25, 2024
Int. Cl. F02M 21/02 (2006.01)
CPC F02M 21/0281 (2013.01) [F02M 21/0206 (2013.01); F02M 21/023 (2013.01); F02M 21/0278 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A gaseous fuel engine system comprising:
a gaseous hydrogen fuel supply;
an engine housing having formed therein a cylinder, and an intake port extending to the cylinder;
an intake runner including a conduit forming an intake passage fluidly connected to the intake port and extending from an upstream runner inlet to a downstream runner outlet, and the conduit including a clamping face forming the downstream runner outlet;
the intake runner further including a valve mount attached to the conduit and including a valve mounting face;
a hydrogen fuel passage extending from a passage inlet formed in the valve mount to a passage outlet, and the hydrogen fuel passage being oriented angularly to at least one of the clamping face or the valve mounting face and extending from an upstream location of the passage inlet to a downstream location of the passage outlet, the hydrogen fuel passage being disposed between a perimeter of the intake passage and an outer perimeter of the intake runner; and
a gaseous fuel admission valve mounted upon the valve mount and fluidly connected to the gaseous hydrogen fuel supply.