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16Бюллетень науки и практики / Bulletin of Science and Practice Т. 6. №11. 2020
https://www.bulletennauki.com https://doi.org/10.33619/2414-2948/60
ТЕХНИЧЕСКИЕ НА УКИ / TECHNICAL SCIENCES
UDC 621.431 https://doi.org/10.33619/2414-2948/60/32
COMPARATIVE ANALYSIS ON PERFORMANCE EMISSION TEST OF SINGLE CYLINDER ENGINE AND MULTI CYLINDER ENGINE
©Shi YuanYuan, Henan Diesel Engine Industry Co., Ltd., Luoyang, China,
shiyuanyuan0908@163.com ©Niu XiaoXiao, Ph.D., Henan Diesel Engine Industry Co., Ltd., Luoyang, China,
xiaoxiaoniu1988@126.com ©Zhang XiangChen, Henan Diesel Engine Industry Co., Ltd., Luoyang, China,
2316216030@qq.com ©Wang ZhiLei, Henan Diesel Engine Industry Co., Ltd., Luoyang, China
СРАВНИТЕЛЬНЫЙ АНАЛИЗ ВЫБРОСОВ ОДНО-И МНОГОЦИЛИНДРОВОГО ДВИГАТЕЛЯ
©Ши Юаньюань, Henan Diesel Engine Industry Co., Ltd., г. Лоян, Китай, shiyuanyuan0908@163.com ©Ню Сяосяо, Ph.D., Henan Diesel Engine Industry Co., Ltd., г. Лоян, Китай, xiaoxiaoniu1988@126.com ©Чжан Сянчэнь, Henan Diesel Engine Industry Co., Ltd., г. Лоян, Китай, 2316216030@qq.com ©Ван Чжилэй, Henan Diesel Engine Industry Co., Ltd., г. Лоян, Китай
Abstract. In the research and test of diesel engine, because the performance test of multi cylinder engine with different configuration needs to be replaced, and there is a certain risk in the first test, while the single cylinder engine is more suitable for the research and test of different configurations because of its simple structure and convenient replacement of components. Therefore, by comparing the differences of combustion state between single cylinder engine and multi cylinder engine with the same configuration, the change law of performance characteristics of single cylinder engine and multi cylinder engine under different working conditions is confirmed. By analyzing the difference of emission performance of single cylinder engine with different configuration, the emission performance of multi cylinder engine under different configuration is predicted. The research in this paper has important significance for further research and test of diesel engine.
Аннотация. При исследовании и испытании дизельных двигателей проводилось сравнение различий в состоянии сгорания между одно- и многоцилиндровым двигателем с одинаковой конфигурацией в различных рабочих условиях. Анализировалась разница в характеристиках выбросов одноцилиндрового двигателя с разной конфигурацией, что позволило спрогнозировать характеристики выбросов многоцилиндрового двигателя в разной конфигурации. Приведенные данные имеют важное значение для дальнейших исследований и испытаний дизельных двигателей.
Keywords: diesel engine, single cylinder engine, multi cylinder engine, performance test.
Бюллетень науки и практики / Bulletin of Science and Practice Т. 6. №11. 2020
https://www.bulletennauki.com https://doi.org/10.33619/2414-2948/60
Ключевые слова: дизель, одноцилиндровый двигатель, многоцилиндровый двигатель, испытание производительности.
Introduction of test methods A common rail diesel engine (1800r / min) produced by China Henan Diesel Engine Industry Co, Ltd. (HND) is selected The single cylinder diesel engine was tested with 25%, 50%, 75%, 90% and 100% propulsion performance tests and 10%, 25%, 50%, 75% and 100% load characteristic tests, respectively. Through the comparative analysis of the test results (explosion pressure, exhaust temperature, smoke, mechanical efficiency, fuel consumption), the variation rules of single cylinder diesel engine and multi cylinder diesel engine under the same working condition were verified.
Calibration of single cylinder engine Due to the structural differences between single cylinder engine and multi cylinder engine, including the differences of intake and exhaust system, fuel system, oil system and cooling system of single cylinder engine, it is necessary to calibrate single cylinder engine and multi cylinder engine before verification test. By adjusting the single cylinder power, controlling the injection signal and intake pressure, the consistency of combustion state between single cylinder engine and multi cylinder engine is ensured [1-2].
By adjusting the control fuel injection signal to make the combustion start point consistent; by adjusting the intake pressure to make the intake air consistent; by adjusting the single cylinder power to make the indicated work the same. (Note: only 100% working condition comparison chart is reserved).
a) Comparison chart of combustion heat a) Comparison chart of combustion heat release
release rate. rate.
b) Comparison chart of cylinder pressure curve.
b) Comparison of cylinder pressure curves.
Бюллетень науки и практики / Bulletin of Science and Practice Т. 6. №11. 2020
https://www.bulletennauki.com https://doi.org/10.33619/2414-2948/60
1800r/min 115 125kW
Voume (nn3) x10"3 0 1 2 3 4
Voume (m ) x 10"
c) Indicator diagram. c) Indicator diagram.
Figure 1. 1800rpm/115kW(same output work) Figure 2. 1800rpm/115kW (same indication work) combustion in cylinder. combustion in cylinder.
By comparing the heat release rate and cylinder pressure curves of multi cylinder engine and single cylinder engine, it is concluded that the combustion state of single cylinder engine and multi cylinder engine is basically the same when the fuel injection state is consistent with the intake and exhaust state. Therefore, the single cylinder engine test can be used as the basis for piston verification.
Comparison of test data Through the test of a single cylinder engine and a multi cylinder engine, the comparison curves of explosion pressure, exhaust temperature, smoke, mechanical efficiency and fuel consumption are obtained (see the figure below for details).
(a) Explosion pressure of propulsion line
—▼— Single cylinder engine
15 25 35 45 55 65 75 85 95 105 operating mode
Бюллетень науки и практики / Bulletin of Science and Practice Т. 6. №11. 2020
https://www.bulletennauki.com https://doi.org/10.33619/2414-2948/60
(b) Explosion pressure of load line
150'
120'
60'
-Y— Single cylinder engine -o— Multi cylinder engine
90-
-1-1-1-1-1-1-1-1—
0 25 50 75 100
operating mode
(c) Exhaust temperature of propulsion line
560
15 490-
420
-'Y— Single cylinder engine —o— Multi cylinder engine
50 75
operating mode
350
25
00
(d) Exhaust temperature of load line
Single cylinder engine —o—Multi cylinder engine
-1-1-1-1-1-1-1-r^
0 25 50 75 100
operating mode
Бюллетень науки и практики / Bulletin of Science and Practice https://www.bulletennauki.com
Т. 6. №11. 2020 https://doi.org/10.33619/2414-2948/60
(e)Single cylinder exhaust temperature of propulsion line
540'
510'
420'
390'
—■L— Single cylinder engine —o— Multi cylinder engine
50 75
operating mode
(f) Single cylinder exhaust temperature of load line
p
500
450
^ 350
со 300
—I—
25
—t— Single cylinder engine —o— Multi cylinder engine
50 75
operating mode
100
(g) Smoke intensity of propulsion line
1.8 1.7 1.6-
^1.5-
z en
& 1.4-•2 1.3-
CO CO
E 1.2
e 1.1
о
сл 1.00.90.8-
25
Single cylinder engine Multi cylinder engine
50 75
operating mode
100
480-
450-
25
00
550 -
400-
0
Бюллетень науки и практики / Bulletin of Science and Practice Т. 6. №11. 2020
https://www.bulletennauki.com https://doi.org/10.33619/2414-2948/60
(h) Smoke intensity of load line
2.0 1.8 1.6 1.4
—▼— Single cylinder engine —o— Multi cylinder engine
50 75
operating mode
(i) Mechanical efficiency of propulsion line
90'
87'
® 84'
о
S 81'
о
£ 78-
Ф
tf 75 ■ о
§ 72'
4=
о ф
S 69' 66'
25
—Single cylinder engine —о— Multi cylinder engine
50 75
operating mode
100
0
25
00
100-1
80
40
20
(j) Mechanical efficiency of load line
—Single cylinder engine —o— Multi cylinder engin
25 50 75
operating mode
100
E 60
0
Бюллетень науки и практики / Bulletin of Science and Practice Т. 6. №11. 2020
https://www.bulletennauki.com https://doi.org/10.33619/2414-2948/60
222
216
о 210
204
(k) Fuel consumption of propulsion line
—1—
25
—T— Single cylinder engine —o— Multi cylinder engine
50 75
operating mode
100
(l) Fuel consumption of load line
-▼— Single cylinder engine -o— Multi cylinder engine
420
Бюллетень науки и практики / Bulletin of Science and Practice Т. 6. №11. 2020
https://www.bulletennauki.com https://doi.org/10.33619/2414-2948/60
Table 1.
COMPARISON TABLE OF SINGLE CYLINDER ENGINE/MULTI CYLINDER ENGINE TEST DATA
(PROPULSION CHARACTERISTICS)
Working condition Model Single cylinder power Oil consumption Explosion pressure Smoke intensity Mechanica l efficiency
25% Single cylinder 37 210.8 77 1.235 86
Multi cylinder 29 220.2 73 1.178 66.6
50% Single cylinder 63 209.5 88 1.459 89.9
Multi cylinder 58 217.1 87 1.744 73
75% Single cylinder 102 206.8 110 1.198 91
Multi cylinder 86 214.2 110 1.286 74
90% Single cylinder 118 209.3 128 0.839 90.5
Multi cylinder 104 213.8 127 1.075 76.6
100% Single cylinder 125 216.7 136 0.925 89.6
Multi cylinder 115 220.2 136 1.19 81.1
Table 2. COMPARISON OF SINGLE CYLINDER ENGINE/MULTI CYLINDER ENGINE TEST DATA (LOAD CHARACTERISTICS)
Working condition Model Single cylinder power Oil consumption Explosion pressure Smoke intensity Mechanical efficiency
100% Single cylinder 125 216.7 136 0.925 89.6
Multi cylinder 115 220.2 136 1.19 81.1
75% Single cylinder 98 212.1 114 1.228 86.9
Multi cylinder 86 214.4 116 1.242 74.7
50% Single cylinder 72 231.9 93 1.88 85.2
Multi cylinder 58 223.1 96 1.453 67.7
25% Single cylinder 40 242.5 72 1.938 75.1
Multi cylinder 29 260.1 77 1.143 51.4
10% Single cylinder 22 300 64 1.219 59.4
Multi cylinder 12 394 62 0.721 31.3
Through the analysis and comparison of the above test results, the following conclusions are obtained:
(1) When the intake state and combustion state are the same, the burst pressure of single cylinder engine and diesel engine is basically the same.
(2) The fuel consumption rate of multi cylinder engine is about 3-7 g/kWh higher than that of single cylinder engine.
(3) The temperature difference between multi cylinder engine and single cylinder engine is about ± 20 °C.
(4) The smoke values of multi cylinder engine and single cylinder engine are different.
(5) Due to the different piston types of single cylinder engine and multi cylinder engine, there is a certain difference in smoke and fuel consumption rate, but the performance and burst pressure of single cylinder engine can basically reflect the performance changes of the whole engine.
Бюллетень науки и практики / Bulletin of Science and Practice Т. 6. №11. 2020
https://www.bulletennauki.com https://doi.org/10.33619/2414-2948/60
Conclusions
1. After completing the single cylinder emission test, it can be concluded that the performance of the single cylinder engine can basically reflect the performance of the whole machine, and no other emission performance tests can be carried out in the future.
2. The combustion state of the single cylinder engine is basically consistent with that of the whole engine, and the single cylinder engine test can be used as the basis for piston verification.
References:
1. Zhijian, Huang, & Zhou, Yuan (2014). Heat pump industry energy saving application. Beijing, Chemical Industry Press. 9. 123-131.
2. Zheng, X. (2008). The refrigeration principle and device.
Список литературы:
1. Zhijian Huang, Zhou Yuan Heat pump industry energy saving application. Beijing: Chemical Industry Press, 2014. 9. P. 123-131.
2. Zheng X. The refrigeration principle and device. 2008.
Работа поступила Принята к публикации
в редакцию 16.10.2020 г. 21.10.2020 г.
Ссылка для цитирования:
Shi YuanYuan, Niu XiaoXiao, Zhang XiangChen, Wang ZhiLei. Comparative Analysis on Performance Emission Test of Single Cylinder Engine and Multi Cylinder Engine // Бюллетень науки и практики. 2020. Т. 6. №11. С. 265-273. https://doi.org/10.33619/2414-2948/60/32
Cite as (APA):
Shi, YuanYuan, Niu, XiaoXiao, Zhang, XiangChen, & Wang, ZhiLei (2020). Comparative Analysis on Performance Emission Test of Single Cylinder Engine and Multi Cylinder Engine. Bulletin of Science and Practice, 6(11), 265-273. https://doi.org/10.33619/2414-2948/60/32
