增压系统海拔自适应和调节能力研究

doi:10.19562/j.chinasae.qcgc.2022.02.013

Abstract

Abstract:

For the problem of unclear altitude self-adaption and adjustment capacity of turbocharging system that can only be determined by lots of experiment， this paper investigates the evaluation method of altitude self-adaption and adjustment capacity for turbocharging system. The turbocharging system altitude self-adaption analysis model is established，and the influence factors on altitude self-adaption capacity are analyzed. The corresponding relationship between the turbocharging system regulation and altitude adjustment is deduced. The experiment of various altitude operation simulation is conducted on diesel engine performance test bench. The test results indicate that the calculated value by the altitude self-adaption capacity and the experimental results are coincident. The errors between calculated and experimental altitude adjustment capacity are less than 5% within the altitude operation range.

Key words: turbocharging system, diesel engine, various altitude, self-adaption capacity, altitude adjustment

Huiyan Zhang,Xuyang Tang,Lei Shi,Kangyao Deng. Study on Altitude Self-adaption and Adjustment Capacity of Turbocharging System[J].Automotive Engineering, 2022, 44(2): 256-263.

Figures/Tables 12

References 26

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参数	技术指标
模拟海拔范围	0~4 500 m
模拟压力	101~56 kPa
模拟温度及精度	-30~25 ℃
进排气气量	最大供气量约300 L/s（标准大气状态）
耐热性	能够长期承受涡轮后排气温度650 ℃的工作条件

海拔/m	转速/ （r·min^-1）	增压系统等效面积/cm²
海拔/m	转速/ （r·min^-1）	2.56	6.10	6.81	8.08	9.36
0	1 400	2.97	2.85	2.72	2.61	2.53
0	2 300	3.42	3.07	2.60	2.34	2.19
2 000	1 400	2.12	2.06	2.04	1.98	1.96
2 000	2 300	2.83	2.51	2.35	2.10	1.92
3 000	1 400	1.99	1.85	1.79	1.75	1.72
3 000	2 300	2.64	2.36	2.10	1.81	1.66
4 500	1 400	1.60	1.50	1.50	1.45	1.47
4 500	2 300	2.26	1.99	1.82	1.65	1.49

海拔/m	转速/ （r·min^-1）	增压系统等效面积/cm²
海拔/m	转速/ （r·min^-1）	5.56	6.10	6.81	8.08	9.36
0	1 400	1.97	1.59	1.50	1.43	1.32
0	2 300		2.27	2.12	1.90	1.75
2 000	1 400	1.64	1.56	1.45	1.36	1.26
2 000	2 300	2.51	2.01	1.88	1.73	1.61
3 000	1 400	1.60	1.50	1.41	1.33	1.21
3 000	2 300	2.09	1.86	1.69	1.58	1.48
4 500	1 400	1.49	1.38	1.30	1.19	1.08
4 500	2 300	1.81	1.66	1.53	1.39	1.26

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Study on Altitude Self-adaption and Adjustment Capacity of Turbocharging System

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