Fuel admission mixer for fumigated engine system
The fuel admission mixer with optimized geometric features and a compressor return passage enhances mixing in fumigated engines, improving combustion stability and performance.
WO2026135871A1PCT designated stage Publication Date: 2026-06-25CATERPILLAR INC
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- CATERPILLAR INC
- Filing Date
- 2025-11-13
- Publication Date
- 2026-06-25
Smart Images
Figure US2025055232_25062026_PF_FP_ABST
Abstract
An engine system (8) includes an intake system (30) having an intake conduit (32) forming an intake passage (34), and a fuel admission mixer (54) coupled to the intake conduit for fumigation admission of a gaseous fuel. The fuel admission mixer includes a fuel tube (68) forming a feed passage (78), and a plurality of mixing air admission slots (86) each fluidly connected to the feed passage. Ramming of intake air through the mixing air admission slots can produce vortices of mixing air and admitted gaseous fuel to improve mixing for combustion stability and other purposes. In an embodiment, pressurized air from a compressor (28) of the engine system is returned into the fuel admission mixer.
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