US 11,988,175 B2
Supplemental fuel system for compression-ignition engine
Matt Matsukawa, Layton, UT (US)
Assigned to American CNG, LLC, Layton, UT (US)
Filed by American CNG, LLC, Layton, UT (US)
Filed on Aug. 31, 2022, as Appl. No. 17/900,095.
Claims priority of provisional application 63/324,447, filed on Mar. 28, 2022.
Claims priority of provisional application 63/324,230, filed on Mar. 28, 2022.
Claims priority of provisional application 63/324,306, filed on Mar. 28, 2022.
Claims priority of provisional application 63/324,420, filed on Mar. 28, 2022.
Claims priority of provisional application 63/324,224, filed on Mar. 28, 2022.
Claims priority of provisional application 63/324,411, filed on Mar. 28, 2022.
Claims priority of provisional application 63/324,231, filed on Mar. 28, 2022.
Claims priority of provisional application 62/497,357, filed on Sep. 1, 2021.
Prior Publication US 2023/0101065 A1, Mar. 30, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. F02M 21/00 (2006.01); B60Q 9/00 (2006.01); F02D 19/02 (2006.01); F02D 19/06 (2006.01); F02D 41/00 (2006.01); F02D 41/30 (2006.01); F02D 41/36 (2006.01); F02M 21/02 (2006.01); F02M 21/04 (2006.01); F02M 35/10 (2006.01); F02B 3/06 (2006.01)
CPC F02M 21/047 (2013.01) [B60Q 9/00 (2013.01); F02D 19/023 (2013.01); F02D 19/0605 (2013.01); F02D 19/0607 (2013.01); F02D 19/0642 (2013.01); F02D 19/0665 (2013.01); F02D 19/0673 (2013.01); F02D 19/0678 (2013.01); F02D 19/0681 (2013.01); F02D 41/0027 (2013.01); F02D 41/3035 (2013.01); F02D 41/36 (2013.01); F02M 21/0221 (2013.01); F02M 21/0239 (2013.01); F02M 21/0242 (2013.01); F02M 21/026 (2013.01); F02M 21/0278 (2013.01); F02M 21/0296 (2013.01); F02M 35/10157 (2013.01); F02M 35/10216 (2013.01); F02B 3/06 (2013.01); F02D 2200/021 (2013.01); F02D 2200/503 (2013.01); F02D 2200/60 (2013.01); F02M 21/0215 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A supplemental fuel system for a machine having a compression-ignition engine, the supplemental fuel system comprising: a fuel mixer including:
a nozzle configured to be positioned within a conduit of an air supply system for the compression-ignition engine, the nozzle having a body defining a first inlet, an outlet, a nozzle passage extending from the first inlet to the outlet, and a second inlet positioned between the first inlet and the outlet, the body having a first cross-sectional dimension that is configured to be less than a second cross-sectional dimension of the conduit such that an entirety of the body is smaller than and does not engage with a sidewall of the conduit so that (i) a first portion of air flowing through the conduit flows through the nozzle passage and (ii) a second portion of the air flowing through the conduit flows around the nozzle; and
a stem having a first stem end and a second stem end, the first stem end interfacing with the second inlet and extending at least partially through a thickness of the body, the stem configured to extend through a wall of the conduit such that the second stem end is positioned outside of the conduit, the stem configured to receive a supplemental fuel from a supplemental fuel source and provide the supplemental fuel through the second inlet of the nozzle to the first portion of the air flowing through the nozzle passage of the nozzle;
at least one of:
(a) further comprising (i) a supplemental fuel tank configured to store the supplemental fuel and (ii) a pressure regulator positioned downstream of the supplemental fuel tank and upstream of the fuel mixer, the pressure regulator configured to reduce a pressure of the supplemental fuel received from the supplemental fuel tank from a first pressure to a second pressure;
(b) further comprising (i) a pair of seals configured to be positioned at opposing sides of an interface where the stem extends through the wall of the conduit and (11) a pair of fasteners configured to compress the pair of seals against the interface to provide an air-tight seal at the interface; or.