FUEL INJECTION WITH SWIRL SPRAY PATTERNS IN OPPOSED-PISTON ENGINES

摘要

In a fuel injection spray pattern for an opposed piston engine, the individual spray plumes have both radial and tangential components with respect to an injection axis (102, 114, 121), which adds a swirl component to a spray pattern of fuel directly injected into the combustion chamber of the opposed piston engine.

主权项

1. A fuel injection system for an opposed-piston engine, comprising:
at least one cylinder (10) with longitudinally-separated intake and exhaust ports (14 and 16); a pair of pistons (20 and 22) disposed in opposition in a bore (12) of the cylinder; and, a plurality of multi-hole fuel injectors (17, 60) positioned for direct side injection of fuel into the cylinder, between end surfaces (20e, 22e) of the pistons; each of the multi-hole fuel injectors including a nozzle (65) having a sac volume (90) with a sac surface (101) and a plurality of injection holes (80) opening through the sac surface and being disposed at a non-zero radial angle and a non-zero circumferential angle with respect to an injection axis.