Development Trend for Technology of Vehicle Internal Combustion Engine

Su, Weifeng; Zhang, Zhongjie; Liu, Ruilin; Qiao, Yingjun

doi:10.15302/j-sscae-2018.01.014

Cited by 12 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Diamond like carbon (DLC) coating is an exceptional solid lubricant, which has attracted extensive attention in the field of tribology. 32,33 DLC coating has different structures of SP 2 and SP 3 carbon atoms, including the part containing hydrogen and that containing almost no hydrogen. The non-hydrogenated DLC coatings include types of amorphous (a-C) and tetragonal (ta-C).…”

Section: Pvd Coatingmentioning

confidence: 99%

A review on preparation process and tribological performance of coatings for internal combustion engine piston ring

Liu

Zhang

Liao

2023

Advances in Mechanical Engineering

View full text Add to dashboard Cite

Reducing the energy consumption and exhaust emission, and improving the combustion efficiency of internal combustion engine are important for solving the problems of climate change and environmental pollution. The piston ring-liner system is one of the most serious friction pairs in internal combustion engine, accounting for 26% of the total friction loss. Depositing strengthened coatings on the surface of piston rings is an effective method to reduce the friction coefficient and wear rate. This paper reviews the research progress of several representative technologies for preparing coatings, such as electroplating, physical vapor deposition (PVD), thermal spraying and chemical vapor deposition (CVD), and so on. Various coatings, such as Cr-Al2O3 coating prepared by representative electroplating process, CrN and DLC coatings prepared by physical vapor deposition, and Mo-based and C-based coatings prepared by thermal spraying process, are briefly discussed. Furthermore, the positive and negative aspects of commonly used piston ring coatings are compared, and their development trends are summarized.

show abstract

Section: Pvd Coatingmentioning

confidence: 99%

A review on preparation process and tribological performance of coatings for internal combustion engine piston ring

Liu

Zhang

Liao

2023

Advances in Mechanical Engineering

View full text Add to dashboard Cite

show abstract

“…These power systems difficultly replace the ICEs as the central power system in a short time. 2 Also, the ICEs must continuously improve fuel economy and power performance, and reduce emissions for our health and blue sky.…”

Section: Introductionmentioning

confidence: 99%

Identification and analysis of the factors to realizing variable intake/exhaust phases in opposed-piston two-stroke diesel engines

Yang

et al. 2022

Advances in Mechanical Engineering

View full text Add to dashboard Cite

The opposed-piston, two-stroke (OP2S) diesel engine is a potential power system to promote thermal efficiency, but the engine has an inferior scavenging performance. Through variable intake/exhaust times, the combustion process can be effectively facilitated. For example, the VVT technology is used in traditional engines. However, this technology has not been applied to OP2S diesel engines. This present work analyzed parameters influencing the intake/exhaust times to find a way to realize variable intake/exhaust times in OP2S diesel engines. These parameters affecting intake/exhaust times were mainly focused on, for example, crank to link ratio (CLR), piston phase difference (PPD), and port height (PH). Through investigating their influence on IMEP, scavenging efficiency, and trapping efficiency, we evaluated the different schemes from performance, intake/exhaust phases, and realization cost. The results show that the PH scheme significantly precedes the PPD and CLR schemes for realizing the variable intake/exhaust times. The PH scheme owns a more extensive phase adjustment range of 31°CA, the IMEP of 0.75 MPa, and the scavenging efficiency of 0.74. To achieve better power and scavenging performance, the EPH should be 37.5% higher than IPH, and the PPD should be kept below 15°CA.

show abstract

“…In order to solve the environmental crisis, various green power systems are emerging, such as hydrogen fuel cells, etc. It will be difficult for these green power systems to replace the ICEs as the main power system in a short time [2]. The ICEs must continuously improve their fuel economy and power, and reduce emissions.…”

Section: Introductionmentioning

confidence: 99%

Influence of the Port Height to Stroke Ratio on the Performance of an OP2S Engine Fueled with Methanol/Diesel

Yang

et al. 2022

Energies

View full text Add to dashboard Cite

Zero carbon emission is a mainstream trend in the development of internal combustion engines (ICEs) in the future. ICEs need to constantly surpass the existing working mechanism, especially in order to explore the possibility of new combustion methods. Dual-fuel combustion is a good way to reduce carbon emissions and achieve clean combustion. However, the traditional internal combustion engine is limited by its own structure, restricting its performance improvement. The opposed-piston, two-stroke (OP2S) diesel engine is a potential power system with a high degree of structural adjustability. Therefore, this work attempted to apply methanol/diesel dual-fuel to OP2S engines in order to explore efficient and clean combustion modes in the future. In this work, a one-dimensional simulation model of an OP2S diesel engine was established and verified. The effect of the port height to stroke ratio on the performance of the OP2S diesel engine was mainly studied for different methanol blending ratios. The results show that the methanol blending ratio does not affect the port height to stroke ratio where the optimal values of the MIP and scavenging efficiency appear. The optimal methanol blending ratio for the power performance of OP2S diesel engines is 5~15%. There is a trade-off relationship between the MIP/scavenging efficiency and trapping efficiency. For the optimization of an OP2S methanol–diesel engine, priority should be given to ensuring an optimal MIP and scavenging efficiency, and then to the appropriate consideration of the trapping efficiency.

show abstract

Development Trend for Technology of Vehicle Internal Combustion Engine

Cited by 12 publications

References 0 publications

A review on preparation process and tribological performance of coatings for internal combustion engine piston ring

A review on preparation process and tribological performance of coatings for internal combustion engine piston ring

Identification and analysis of the factors to realizing variable intake/exhaust phases in opposed-piston two-stroke diesel engines

Influence of the Port Height to Stroke Ratio on the Performance of an OP2S Engine Fueled with Methanol/Diesel

Contact Info

Product

Resources

About