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Oak Ridge National Laboratory-Erin Renoll
  • Journal Article
  • 03-12-01-0TOC
Published 2019-05-22 by SAE International in United States
No part of this publication may be reproduced, stored in a retrieval system, distributed, or transmitted, in any form or by any means without the prior written permission of SAE International. For permission and licensing requests, contact SAE Permissions, 400 Commonwealth Drive, Warrendale, PA 15096-0001 USA; e-mail:; phone: 724-772-4028; fax: 724-772-9765. Printed in USA Information contained in this work has been obtained by SAE International from sources believed to be reliable. However, neither SAE International nor its authors guarantee the accuracy or completeness of any information published herein and neither SAE International nor its authors shall be responsible for any errors, omissions, or damages arising out of use of this information. This work is published with the understanding that SAE International and its authors are supplying information, but are not attempting to render engineering or other professional services. If such services are required, the assistance of an appropriate professional should be sought.

Allied Aircraft Piston Engines of World War II, 2nd Edition

Graham White
  • Book
  • R-478
Published 2019-05-16 by SAE International in United States

Allied Aircraft Piston Engines of World War II, now in its second edition, coalesces multiple aspects of war-driven aviation and its amazing technical accomplishments, leading to the allied victory during the second world war.

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Operating Instructions for Aircraft Engines (Preparation of)

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • AS177C
  • Current
Published 2018-09-11 by SAE International in United States
This specification covers the requirements for format and outline of contents of operating instructions in published form or in manuscript form suitable for publication.
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Horsepower Correction Formulae

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • ARP2C
  • Current
Published 2018-08-09 by SAE International in United States
This document discusses formulae considered applicable to aircraft engines having integral supercharging without aftercooling, and using gasoline introduced at the entrance to the supercharger or directly into the cylinders. Such engines are normally designated as single and two speed engines. Correction formulae for engines having two stage or exhaust turbo supercharging will not be discussed. Corrections for engines having a high degree of integral supercharging will be discussed in general terms only and no specific formulae will be presented. The correction formulae and methods listed are empirical and subject to error due to conditions beyond the scope of known corrections. Usage has indicated, however, that the correction formulae listed will provide a satisfactory approximation of power output under standard conditions.
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Definitions, Aircraft Reciprocating Engine Performance

E-25 General Standards for Aerospace and Propulsion Systems
  • Aerospace Standard
  • AS20D
  • Current
Published 2018-06-20 by SAE International in United States
This document lists definitions that are commonly used in describing aircraft reciprocating engine performance.
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Shock Waves in Narrow Channels and Their Applications for High-Efficiency Unsteady Wave Engines

California State Polytechnic University-Pejman Akbari
Columbia University-Lucas Bermudes
Published 2017-09-19 by SAE International in United States
Reducing the scale of the power engines, pose problems that are not encountered at large scale. Several effects, which are negligible at large scale, prove to dominate these viscous forces driven flows. Particularly, it is useful to investigate unsteady machines at small scales when subject to pressure waves. In this paper, the effects of scale on the propagation of shock waves in narrow shock tubes are studied using analytical and numerical modeling approaches. It is discussed how the size scale can become a decisive factor in governing the behavior of these small-scale devices. The results, in agreement with previous studies, suggest that the wall viscous stresses and heat conduction lead to deviation in flow characteristics compared to ideal shock wave behaviors observed in larger scales. The numerical results show shock-wave attenuation along the length of a narrow shock tube, in accordance with the developed analytical models. The obtained results can be useful in determining how much performance of micro wave machines can be influenced by the effects of scale.
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Development of Hydraulic- Controlled Variable Valve Lift System for Scooter Engine

SAE International Journal of Engines

Taipei Univ of Technology-Guo-Rong Wun, Cheng-Tse Chuang, Yong-Fu Syu, Chia-Sheng Wang, Yuh-Yih Wu
  • Journal Article
  • 2016-32-0095
Published 2016-11-08 by SAE International in United States
In this research, with proposed design of hydraulic-controlled variable valve lift system, a feed pump is used to supply the low-pressure oil into the hydraulic pump which will compress low-pressure oil as high-pressure oil and pumps the high-pressure oil into the hydraulic cylinder. In the meanwhile, the intake valve opened in accordance with the plunger is pushed by the hydraulic cylinder. To achieve the change of intake valve lift, a DC motor connected with the control rack that is used for controlling oil-drain time of the hydraulic pump. In addition, a solenoid valve is installed in order that the intake valve will be closed quickly without controlling the drain flow when the maximum valve lift is reached. Commonly, the throttle is not required with variable valve lift system, but the throttle is kept for engine start. Hence, except for engine cranking condition, the throttle maintains in wide open (WOT) under different test conditions. After realizing the proposed variable valve lift system, the valve profile is measured with the established bench at the beginning, and the…
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2017 FiatChrysler: more Dodge muscle, fewer Fiat models

Automotive Engineering: September 1, 2016

Bill Visnic
  • Magazine Article
  • 16AUTP09_13
Published 2016-09-01 by SAE International in United States

At a mid-summer media program to reveal its 2017 model lineup, nobody from FiatChrysler Automobiles said anything about some fizzy rumors speculating the company might have engineered a power boost for the already outlandish 707-hp generated by its supercharged 6.4-L “Hellcat” V8. There's no new power for the thunderous V8, but FCA's 2017 lineup does include some Hellcat-inspired niche models, continued expansion of the popular Jeep range and a consolidation of the Fiat small-car line as U.S. buyers continue to veer toward crossovers and pickups.

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Insight: Simulation Tools for Engine Design (DVD)

  • Book
  • SOD-008/2
Published 2016-04-08 by SAE International in United States
In "Simulation Tools for Engine Design" engineers from Ricardo Software discuss the use of simulation software in new powertrain development. Another engineer, this time from General Motors, talks about how simulation tools helped them solve the challenge of fuel flow reversion while designing the new turbocharged Cadillac V6 engine. This episode highlights: • The challenge of simulating complex and combined systems in one vehicle • An example of how a library of components in a software package can be chosen to form a specific system and analyzed • How computational fluid dynamics simulation tools were used to help redesign a new planum

Developing & Simulating the Duty Cycle on Engine Dynamometer based on Engine RWUP

Amrita School of Engineering-Sivanesan Murugesan, Lakshmikanthan Chinnasamy
Mahindra Heavy Engines Pvt. Ltd.-Abhijeet Patil
Published 2015-01-14 by SAE International in United States
Appropriate test cycle is required for engine testing. To do so, a new methodology is developed for deriving Engine Test Cycle based on real world duty cycle. Transient speed and load is to be collected from the functional engine on the field. The duty cycle for cyclic operation will be developed from the actual transient speed and load conditions. An iterative process and the comparison of chi-square statistical data is used to categorize typical microtrips, segments of engine operation collected during performance of certain activities. Different microtrips of all activities were combined together to make up a cycle of operation and test cycle as well. These data's are compared to statistical data which is used to illustrate the raw data. On successful comparison, the transient test cycle is validated on the test bed. To facilitate further engine testing, the cycle is transformed into a schedule of torque and speed points at One second intervals. FTP (Federal Test Procedure) is used for normalizing the Data. From the conducted work a representative test cycle is developed for…
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