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Analysis of Diesel Fuel Pump Camshaft Speed Fluctuations
Technical Paper
2000-01-0708
ISSN: 0148-7191, e-ISSN: 2688-3627
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Event:
SAE 2000 World Congress
Language:
English
Abstract
Momentary camshaft speed signal of in-line fuel pump of diesel engines is investigated in this paper. First, time domain characteristics and frequency characteristics of camshaft speed are analyzed. Secondly, the relation between momentary camshaft speed and fuel pressure in the pump is studied. The work indicates that pulsed fuel pump pressure is a result of camshaft speed fluctuation. Thirdly, the relation among momentary speed fluctuations, different injection timing and injection duration are studied. Correlation of the fluctuation amplitude and injected fuel quantity is calibrated. The basic results show that it is possible to estimate cylinder-by-cylinder fuel injection quantity. Finally, the relation between camshaft dynamics and pump cam profile design is discussed. The results indicate that momentary camshaft speed is a useful signal for injection system design, diagnosis and control.
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Citation
Jianqiu, L., Minggao, Y., and Juntao, W., "Analysis of Diesel Fuel Pump Camshaft Speed Fluctuations," SAE Technical Paper 2000-01-0708, 2000, https://doi.org/10.4271/2000-01-0708.Also In
References
- Chuanjin Du Minggao Yang Zheng Liu et al. Research and Development of an Electronically Controlled Pump-Pipe-Valve-Injector Fuel Injection System Journal of Tsinghua University(Science and Technology) 37 11 Nov. 1997 115 118
- Glassey S.F. et al. HEUI-A New Direction for Diesel Engine Fuel System SAE 930270
- Rizzoni G. et al. Diagnosis of Individual Cylinders Misfires by Signature Analysis of Crankshaft Speed Fluctuations SAE 890884
- Ignition Control by Ionization Current Interperatation SAE 960045
- MacCarley Carl A. et al. An Auxiliary Sensor Processor to Provide Real Time Fuel Delivery Feedback for a Microprocessor Based Diesel Engine Controller SAE 870435
- Nakamura Norihiko et al. Detection of Higher Frequency Vibration to Sampling Knock Controllability SAE 871912
- Citron S. J. et al. Cylinder by Cylinder Engine Pressure and Pressure Torque Waveform Determination Utilizing Speed Fluctuations SAE 890486
- Azzoni P. et al. Measurement of Engine Misfire in the Lamborghini 533 V-12 Engine Using Crankshaft Speed Fluctuation SAE 950084
- Yang, Minggao Lu, Qilong Li Jianqiu et al. Study of the Injection Control Valve in a New Electronic Diesel Fuel System SAE 980813