Internal combustion engine and piston having stepped combustion bowl with non-axisymmetric profile
An internal combustion engine system includes an engine housing having a combustion cylinder, and a piston movable within the combustion cylinder to increase a pressure therein to an autoignition threshold for injected fuel. The piston includes a piston crown having a combustion face forming a combustion bowl, and varied in profile to form jet-jet interaction limiters at locations offset from fuel spray jet paths from a fuel injector. The jet-jet interaction limiters include a bowl component and a step component protruding, respectively, within the combustion bowl and a step located transitioning between the combustion bowl and a circumferential rim of the piston. Limiting jet-jet interaction limits soot production in exhaust produced by the engine.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States); Caterpillar, Inc., Peoria, IL (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- A18047; AC02-06CH11357
- Assignee:
- Caterpillar Inc. (Peoria, IL)
- Patent Number(s):
- 11,274,628
- Application Number:
- 16/889,958
- OSTI ID:
- 1892707
- Resource Relation:
- Patent File Date: 06/02/2020
- Country of Publication:
- United States
- Language:
- English
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