Experimental investigation about effect of glow intensity on combustion characteristics for a micro IC engine with platinum wire glow-ignition

Zhang, Li; Zeng, Xiaorong; Shang, Huichao; Tang, Zhigang; Geng, Yangtao; Han, Jinlin

doi:10.1016/j.applthermaleng.2016.08.059

Cited by 9 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A specialized miniature engine combustion test bench is constructed, as shown in Figure 2 , which is made up of a motor driving system, load absorption system, data acquisition system, as well as a test engine. The working principle of the test bench is described in detail in ref ( 22 ). In Figure 2 , a pressure sensor and a crank angle sensor are installed on the test bench to carry out combustion diagnosis.…”

Section: Combustion Characteristic Test Under Stable Conditionsmentioning

confidence: 99%

“…The AP06 engine uses a glow ignition system. 22 Neither a spark plug nor fuel injectors are used. It has been fueled with a mixture of 65% methanol, 15% nitromethane, and 20% castor oil.…”

Section: Combustion Characteristic Test Under Stable Conditionsmentioning

confidence: 99%

“…It is a two-stroke, single-cylinder, glow-ignition, no piston ring, and air-cooled reciprocating engine with following dimensions: bore 11.25 mm, stroke 10 mm, and a geometric compression ratio of 8. The AP06 engine uses a glow ignition system . Neither a spark plug nor fuel injectors are used.…”

Section: Combustion Characteristic Test Under Stable Conditionsmentioning

confidence: 99%

See 2 more Smart Citations

Experiment on the Influence of Residual Exhaust Gas on the Combustion Characteristics of a Miniature Engine with Platinum Wire Ignition

et al. 2022

Self Cite

View full text Add to dashboard Cite

Affected by the scale effect, it is difficult for the gas exchange of a micro-internal combustion (IC) engine to reach the level of a conventional-size engine, resulting in excessively high residual exhaust gas content in the cylinder and serious deterioration of combustion. In order to verify the above point, experiments were carried out based on the variation characteristics of the residual exhaust gas content of the micro-engine during the starting process. The residual exhaust gas content of the micro-engine exhibits a gradually increasing change characteristic during the starting process. Through continuous monitoring of the in-cylinder pressure, the combustion characteristics of the first ignition cycle without residual exhaust gas were captured. Then, it was compared with that in the transitional combustion stage and the stable combustion stage. The latter two combustion stages have different residual exhaust gas contents. The results show that for micro-engines, the combustion cycle with different residual exhaust gas contents presents significantly different combustion characteristics. As the residual exhaust gas content increases, the combustion pressure and the heat release rate decrease, and the combustion duration extends. Excessive residual exhaust gas content is the main reason for the abnormal combustion characteristics of the micro-IC engine with platinum wire ignition. In addition, when there is no residual exhaust gas, the indicated work is the largest and the thermal efficiency is higher. As the in-cylinder residual exhaust gas content increases, the indicated work decreases significantly.

show abstract

Section: Combustion Characteristic Test Under Stable Conditionsmentioning

confidence: 99%

“…The AP06 engine uses a glow ignition system. 22 Neither a spark plug nor fuel injectors are used. It has been fueled with a mixture of 65% methanol, 15% nitromethane, and 20% castor oil.…”

Section: Combustion Characteristic Test Under Stable Conditionsmentioning

confidence: 99%

See 1 more Smart Citation

Experiment on the Influence of Residual Exhaust Gas on the Combustion Characteristics of a Miniature Engine with Platinum Wire Ignition

et al. 2022

Self Cite

View full text Add to dashboard Cite

show abstract

“…[7][8][9][10][11][12] However, scaled-down reciprocating internal combustion (IC) engines should be attracting more attention. [13][14][15][16] To enable the development of scaling laws for small engine performance, Menon et al 17 constructed a dynamometer system suitable for measuring the performance of small IC engines and presented detailed performance measurements for a particular engine with a mass of 150 g. Rowton et al 18 analyzed and created scaling relationships for performance and efficiency among the scaling study IC engines, deduced that when the ratio of cylinder surface area to swept volume is less than 1.5 cm 21 , the cylinder wall heat loss is the main mechanism of thermal efficiency loss, and the performance of the scaled-down IC engine will be significantly affected. Sher and colleagues 19,20 developed a phenomenological model to consider the relevant processes inside the cylinder of a homogeneous-charge compression-ignition (HCCI) engine, proposed an approximated analytical solution to yield the lower possible limits of scaling down HCCI cycle engines, and indicated the minimum allowed engine size is between 0.3 and 0.4 cc (bore diameter 37.5 mm) and the maximum obstacle of scaling down the engines is gas leakage of blow-by.…”

Section: Introductionmentioning

confidence: 99%

“… 7 – 12 However, scaled-down reciprocating internal combustion (IC) engines should be attracting more attention. 13 – 16 …”

Section: Introductionmentioning

confidence: 99%

Experimental test and thermodynamic analysis on scaling-down limitations of a reciprocating internal combustion engine

et al. 2020

Self Cite

View full text Add to dashboard Cite

Due to the enormous energy densities of liquid hydrocarbon fuels for future utilization on micro scale, there is a concern about the feasibility of scaling down reciprocating internal combustion engines from small scale to meso scale. By building a specialized test bench, the performance and combustion characteristics of a miniature internal combustion engine with a displacement of 0.99 cc were tested, and the thermodynamic simulation was carried out to achieve a more complete understanding of in-cylinder mass and energy change of the miniature internal combustion engine. The miniature internal combustion engine had higher brake-specific fuel consumption, lower thermal efficiency, lower brake mean effective pressure, and serious cyclic variation; however, friction mean effective pressure seems to be less sensitive to engine speed. Simulation results showed that the miniature internal combustion engine had a poor volumetric efficiency, which was not more than 50%. The step-by-step processes of scaling down the miniature internal combustion engine were also simulated; it was found that the maximum indicated mean effective pressure loss was due to the imperfection of gas exchange processes, and the next was the imperfection of combustion. It is considered that for the scaled-down miniature internal combustion engines, more attention should be pay on improving the processes of gas exchange and combustion, and achieving meso-scale internal combustion engines with cylinder bore less than 1 mm is thermodynamically possible in future if these imperfections, especially that of the gas exchange process, can be effectively perfected.

show abstract

Experimental study on the operating characteristics of a reciprocating free-piston linear engine

Huang

Kong

2019

Applied Thermal Engineering

View full text Add to dashboard Cite

Experimental investigation about effect of glow intensity on combustion characteristics for a micro IC engine with platinum wire glow-ignition

Cited by 9 publications

References 13 publications

Experiment on the Influence of Residual Exhaust Gas on the Combustion Characteristics of a Miniature Engine with Platinum Wire Ignition

Experiment on the Influence of Residual Exhaust Gas on the Combustion Characteristics of a Miniature Engine with Platinum Wire Ignition

Experimental test and thermodynamic analysis on scaling-down limitations of a reciprocating internal combustion engine

Experimental study on the operating characteristics of a reciprocating free-piston linear engine

Contact Info

Product

Resources

About