A Numerical Simulation Method for Vibration Stress Waveforms of High-Speed Diesel Engine Crankshaft System

1991 ◽  
Author(s):  
Kunio Shimoyamada ◽  
Shoichi Iwamoto ◽  
Tomoaki Kodama ◽  
Yasuhiro Honda ◽  
Katsuhiko Wakabayashi
Keyword(s):  
Numerical Simulation ◽  
Diesel Engine ◽  
High Speed ◽  
Simulation Method ◽  
Numerical Simulation Method ◽  
High Speed Diesel ◽  
Vibration Stress ◽  
Engine Crankshaft

The Application of SPH Numerical Simulation Method in the Solid High-Speed Collision

2014 ◽  
Vol 568-570 ◽  
pp. 879-882
Author(s):  
Zhi Bang Yang ◽  
Tian Tian Yin ◽  
Ming Hua Pang
Keyword(s):  
Numerical Simulation ◽  
Computer Technology ◽  
High Speed ◽  
Simulation Experiment ◽  
Simulation Method ◽  
Numerical Simulation Method ◽  
Simulation Based ◽  
High Speed Collision

With the development of computer technology, SPH numerical simulation method is widely used in the engineering simulation. Based on introducing the principle of SPH, these provided a reference for future SPH research on parts in the high speed collision through simulation experiment of solid high-speed collision.

scholarly journals Prognostic Assessment of the Performance Parameters for the Industrial Diesel Engines Operated with Microalgae Oil

2021 ◽  
Vol 13 (11) ◽  
pp. 6482
Author(s):  
Sergejus Lebedevas ◽  
Laurencas Raslavičius
Keyword(s):  
Energy Efficiency ◽  
Diesel Engine ◽  
High Speed ◽  
Performance Parameters ◽  
Prognostic Assessment ◽  
High Speed Diesel ◽  
Microalgae Oil ◽  
The Difference ◽  
Smoke Opacity ◽  
Efficiency Indicators

A study conducted on the high-speed diesel engine (bore/stroke: 79.5/95.5 mm; 66 kW) running with microalgae oil (MAO100) and diesel fuel (D100) showed that, based on Wibe parameters (m and φz), the difference in numerical values of combustion characteristics was ~10% and, in turn, resulted in close energy efficiency indicators (ηi) for both fuels and the possibility to enhance the NOx-smoke opacity trade-off. A comparative analysis by mathematical modeling of energy and traction characteristics for the universal multi-purpose diesel engine CAT 3512B HB-SC (1200 kW, 1800 min−1) confirmed the earlier assumption: at the regimes of external speed characteristics, the difference in Pme and ηi for MAO100 and D100 did not exceeded 0.7–2.0% and 2–4%, respectively. With the refinement and development of the interim concept, the model led to the prognostic evaluation of the suitability of MAO100 as fuel for the FPT Industrial Cursor 13 engine (353 kW, 6-cylinders, common-rail) family. For the selected value of the indicated efficiency ηi = 0.48–0.49, two different combinations of φz and m parameters (φz = 60–70 degCA, m = 0.5 and φz = 60 degCA, m = 1) may be practically realized to achieve the desirable level of maximum combustion pressure Pmax = 130–150 bar (at α~2.0). When switching from diesel to MAO100, it is expected that the ηi will drop by 2–3%, however, an existing reserve in Pmax that comprises 5–7% will open up room for further optimization of energy efficiency and emission indicators.

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