Skip to Main Content
 

Global Search Box

 
 
 

ETD Abstract Container

Abstract Header

Internal Combustion Engine Cold Test Driveline Modeling, Analysis and Development

Tailony, Rauf
http://orcid.org/0000-0003-1004-5467
http://rave.ohiolink.edu/etdc/view?acc_num=toledo1564765172535669

Abstract Details

2019, Doctor of Philosophy, University of Toledo, Engineering.
The internal combustion engine cold test is becoming one of the main tests performed during the late stage of the product development and production quality inspection. Analyzing the status of the engine is required before releasing it to the consumers market. The cold test is a station with a highly optimized design, where it is capable of inspecting the functionality of various components and properties of the engine in a relatively short period of time during the production process. The studies included in the coming sections are trying to achieve an accurate engine testing data which leads to a reliable decision regarding the engine health and efficiency. The cold testing stand is a vibratory source with a high complexity, for the fact of having many parameters and assemblies that play a role in forming the noise, vibration, and harshness (NVH) of the testing stand. A better understanding of the machine dynamics behavior can be achieved by creating a torsional vibratory model and calculating the driveline natural frequencies. Calculating the natural frequencies of the system is crucial for avoiding resonance excitations during the testing phase. Eigenvalue problem solution was constructed; the natural frequencies and the mode shapes were obtained. The calculated natural frequencies are showed a deviation of less than 5% of the measured values. Engine cold testing process depends mainly on the feedback of the mounted sensors on the driveline and the engine itself. Feedback signals carry information about the rotating speed, the engine noise and vibration, the manifold pressures and the torque values. The clarity of these signals affects the accuracy and the utility of the cold test during the engine development. The engine, the driveline, and the electric motor system operate at high speeds that generate axial and lateral vibrations. The failure of any part of the assembly distorts the signals and induces backlash or harmonic amplification. A backlash study is conducted by analyzing the harmonic distortions and a methodology to locate and eliminate the mechanical interruption source is explained.
Efstratos Nikolaidis, Dr. (Committee Chair)
214 p.
Mathematics; Mechanical Engineering; Physics
Torsional vibration,cold test, driveline modeling,vibration modeling,natural frequency calculation,Torque analysis,Torsional defects, Engine defects mapping,Exhaust port analysis,Bearing diagnostics,Premature failure, Variable frequency drive

Recommended Citations

Citations

  • Tailony, R. (2019). Internal Combustion Engine Cold Test Driveline Modeling, Analysis and Development [Doctoral dissertation, University of Toledo]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1564765172535669

    APA Style (7th edition)

  • Tailony, Rauf. Internal Combustion Engine Cold Test Driveline Modeling, Analysis and Development. 2019. University of Toledo, Doctoral dissertation. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=toledo1564765172535669.

    MLA Style (8th edition)

  • Tailony, Rauf. "Internal Combustion Engine Cold Test Driveline Modeling, Analysis and Development." Doctoral dissertation, University of Toledo, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1564765172535669

    Chicago Manual of Style (17th edition)

toledo1564765172535669
415
© 2019, all rights reserved.
This open access ETD is published by University of Toledo and OhioLINK.