This content is not included in
your SAE MOBILUS subscription, or you are not logged in.
Opposed Piston Opposed Cylinder (opoc™) 5/10 kW Heavy Fuel Engine for UAVs and APUs
Technical Paper
2006-01-0278
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Language:
English
Abstract
The opposed piston opposed cylinder (opoc™) engine concept has been demonstrated as an engine concept with high specific power density and high power to volume ratio. The engine has several potential applications, including use as an auxiliary power unit (APU) in various commercial and military applications and as the primary power source for small unmanned air vehicles (UAVs). An engine in this power range operating on heavy fuels (e.g. JP5, JP8, DF2) is not typically available.
The engine uses a two-cycle supercharged uniflow scavenging system with asymmetric port timing and will run at speeds between 8,000 and 12,000 rpm. The unique design of the opoc™ engine produces a piston speed that is half the speed of a typical crankshaft engine running at the same speed. Uniflow scavenging produces gas exchange efficiencies rivaling those of four-cycle engines. The design also leads to reduced in-cylinder heat losses. Furthermore, the opoc™ engine is fully balanced. These significant benefits lead to an extremely lightweight and compact engine design.
Extensive 1-D gas exchange and 3-D scavenge process simulation and optimizations were used to design the combustion system. Traditional Computer Aided Engineering (CAE) practices in the area of Multi-Body Systems (MBS) simulation and thermo-mechanical Finite Element Analysis (FEA) were adapted to support the design and development of this engine.
This paper provides an overview of the design process with focus on the unique features of the opoc™ engine and presents the system engineering techniques used in its design along with some results.
Recommended Content
Authors
- James Kalkstein - FEV Engine Technology, Inc.
- Wulf Röver - FEV Engine Technology, Inc.
- Brian Campbell - FEV Engine Technology, Inc.
- Lurun Zhong - FEV Engine Technology, Inc.
- Hua Huang - FEV Engine Technology, Inc.
- Jing Ping Liu - FEV Engine Technology, Inc.
- Marek Tatur - FEV Engine Technology, Inc.
- Andreas Geistert - FEV Engine Technology, Inc.
- Adrian Tusinean - Advanced Propulsion Technologies, Inc. (APT)
Topic
Citation
Kalkstein, J., Röver, W., Campbell, B., Zhong, L. et al., "Opposed Piston Opposed Cylinder (opoc™) 5/10 kW Heavy Fuel Engine for UAVs and APUs," SAE Technical Paper 2006-01-0278, 2006, https://doi.org/10.4271/2006-01-0278.Also In
New Diesel Engines and Components and CI Engine Performance for Use with Alternative Fuels
Number: SP-2014; Published: 2006-04-03
Number: SP-2014; Published: 2006-04-03
References
- Avallone, Eugene A. Baumeister Theodore, III “Marks' Standard Handbook for Mechanical Engineering Tenth 0-07-004997-1 1996
- Norton, Robert L. “Design of Machinery Second 0-07-242351-X 2001
- Peng, Lixin Tusinean Adrian 2005 SAE International “Development of a Compact and Efficient Truck APU,” 2005
- Hofbauer, Peter Opposed Piston Opposed Cylinder (opoc) Engine for Military Ground Vehicles SAE Paper 2005-01-1548