High Pressure Sensor for Use in Common Rail Diesel Fuel Injection Systems

1998 ◽  
Author(s):  
Donald E. Paulus ◽  
Michael L. Dunbar
Keyword(s):  
High Pressure ◽  
Diesel Fuel ◽  
Pressure Sensor ◽  
Fuel Injection ◽  
Common Rail ◽  
Diesel Fuel Injection

Fast Burning and Reduced Soot Formation via Ultra-High Pressure Diesel Fuel Injection

1991 ◽  
Author(s):  
Haruyuki Yokota ◽  
Takeyuki Kamimoto ◽  
Hidenori Kosaka ◽  
Kinji Tsujimura
Keyword(s):  
High Pressure ◽  
Diesel Fuel ◽  
Fuel Injection ◽  
Soot Formation ◽  
Ultra High Pressure ◽  
Diesel Fuel Injection

scholarly journals Common Rail Diesel Fuel Injection Management based on FPGA Technology

2015 ◽  
Vol 13 (7) ◽  
pp. 2078-2084
Author(s):  
Ernesto Gutierrez ◽  
Xavier Sala
Keyword(s):  
Diesel Fuel ◽  
Fuel Injection ◽  
Common Rail ◽  
Diesel Fuel Injection

Numerical Simulation of the Dynamic Response of a Diesel Fuel Injector Using CFD

2005 ◽  
Author(s):  
Yong Yi ◽  
Aleksandra Egelja ◽  
Clement J. Sung
Keyword(s):  
Experimental Data ◽  
High Pressure ◽  
Dynamic Response ◽  
Diesel Fuel ◽  
Fuel Injection ◽  
Injection System ◽  
Fuel Injection System ◽  
Fuel Injector ◽  
Diesel Fuel Injection ◽  
Very High

The development of a very high pressure diesel fuel injection system has been one of the key solutions to improve engine performance and to reduce emissions. The diesel fuel management in the injector directly affects how the fuel spray is delivered to the combustion chamber, and therefore affects the mixing, combustion and the pollutants formation. To design such a very high pressure diesel fuel injection system, an advanced CFD tool to predict the complex flow in the fuel injection system is required in the robust design process. In this paper, a novel 3D CFD dynamic mesh with cavitation model is developed to simulate the dynamic response of the needle motion of a diesel fuel injector corresponding to high common rail pressure and other dimensional design variables, coupling with the imbalance of the spring force and the flow force (pressure plus viscous force). A mixture model is used for cavitation resulting from high speed flow in fuel injector. Due to the lack of experimental data, the model presented in this paper is only validated by a limited set of experimental data. Required meshing strategy is also discussed in the paper.

scholarly journals EFFECT OF ETHANOL ON PERFORMANCE AND DURABILITY OF A DIESEL COMMON RAIL HIGH PRESSURE FUEL PUMP

Transport ◽  
2015 ◽  
Vol 31 (3) ◽  
pp. 305-311 ◽  
Author(s):  
Tomas Mickevičius ◽  
Stasys Slavinskas ◽  
Raimondas Kreivaitis
Keyword(s):  
High Pressure ◽  
Diesel Fuel ◽  
Fuel Injection ◽  
Common Rail ◽  
Injection System ◽  
Fuel Injection System ◽  
Fuel Blend ◽  
High Pressure Pump ◽  
Fuel Pump ◽  
Fuel Delivery

This paper presents a comparative experimental study for determining the effect of ethanol on functionality of a high pressure pump of the common rail fuel injection system. For experimental durability tests were prepared two identical fuel injection systems, which were mounted on a test bed for a fuel injection pump. One of the fuel injection systems was feed with diesel fuel; other fuel injection system was fuelled with ethanol–diesel fuel blend. A blend with 12% v/v ethanol and 88% v/v diesel fuel and low sulphur diesel fuel as a reference fuel were used in this study. To determine the effect of ethanol on the durability of the high pressure pump total fuel delivery performance and surface roughness of pump element were measured prior and after the test. Results show that the use of the ethanol–diesel blend tested produced a negative effect on the durability of the high pressure fuel pump. The wear of plungers and barrels when using ethanol–diesel fuel blend caused a decrease in fuel delivery up to 30% after 100 h of operation.

An Evaluation of Common Rail, Hydraulically Intensified Diesel Fuel Injection System Concepts and Rate Shapes

1998 ◽  
Author(s):  
K. Gebert ◽  
R. L. Barkhimer ◽  
N. J. Beck ◽  
D. D. Wickman ◽  
K. V. Tanin ◽  
...  
Keyword(s):  
Diesel Fuel ◽  
Fuel Injection ◽  
Common Rail ◽  
Injection System ◽  
Fuel Injection System ◽  
Diesel Fuel Injection

scholarly journals Impact of Alternative Paraffinic Fuels on the Durability of a Modern Common Rail Injection System

Energies ◽  
2020 ◽  
Vol 13 (16) ◽  
pp. 4166
Author(s):  
Carmen Mata ◽  
Jakub Piaszyk ◽  
José Antonio Soriano ◽  
José Martín Herreros ◽  
Athanasios Tsolakis ◽  
...  
Keyword(s):  
Diesel Fuel ◽  
Alternative Fuels ◽  
Fuel Injection ◽  
Common Rail ◽  
Injection System ◽  
Fuel Injection System ◽  
Fuel Blend ◽  
Diesel Fuel Injection ◽  
The Impact ◽  
Conventional Diesel Fuel

Common rail (CR) diesel fuel injection systems are very sensitive to variations in fuel properties, thus the impact of alternative fuels on the durability of the injection system should be investigated when considering the use of alternative fuels. This work studies a high-pressure CR (HPCR) diesel fuel injection system operating for 400 h in an injection test bench, using a fuel blend composed of an alternative paraffinic fuel and conventional diesel (50PF50D). The alternative fuel does not have aromatic components and has lower density than conventional diesel fuel. The injection system durability study was carried out under typical injection pressure and fuel temperature for the fuel pump, the common rail and the injector. The results show that the HPCR fuel injection system and its components (e.g., piston, spring, cylinder, driveshaft and cam) have no indication of damage, wear or change in surface roughness. The absence of internal wear to the components of the injection system is supported by the approximately constant total flow rate that reaches the injector during the whole the 400 h of the experiment. However, the size of the injector nozzle holes was decreased (approximately 12%), being consistent with the increase in the return fuel flow of the injector and rail (approximately 13%) after the completion of the study. Overall, the injection system maintained its operability during the whole duration of the durability study, which encourages the use of paraffinic fuels as an alternative to conventional diesel fuel.

scholarly journals Complex multicomponent real-fluid thermodynamic model for high-pressure Diesel fuel injection

Fuel ◽  
2019 ◽  
Vol 257 ◽  
pp. 115888 ◽  
Author(s):  
C. Rodriguez ◽  
Houman B. Rokni ◽  
P. Koukouvinis ◽  
Ashutosh Gupta ◽  
M. Gavaises
Keyword(s):  
High Pressure ◽  
Diesel Fuel ◽  
Thermodynamic Model ◽  
Fuel Injection ◽  
Real Fluid ◽  
Diesel Fuel Injection

Characterization of N-Butanol High Pressure Injection From Modern Common Rail Injection System

2015 ◽  
Author(s):  
Tongyang Gao ◽  
Kelvin Xie ◽  
Shui Yu ◽  
Xiaoye Han ◽  
Meiping Wang ◽  
...  
Keyword(s):  
High Pressure ◽  
Diesel Fuel ◽  
Alternative Fuels ◽  
Fuel Injection ◽  
Pressure Rise ◽  
Injection Rate ◽  
Common Rail ◽  
Injection System ◽  
Rate Measurement ◽  
Direct Imaging

Increasing attention has being paid to alternative fuels that have the potential to reduce overall greenhouse gas emissions and fossil fuel dependence. The alcohol fuel n-butanol, as one of the advanced biofuels, can be potentially utilized as a partial or complete substitute for the diesel fuel in diesel engines. Experimental results from literature, as well as from the authors’ previous research, have shown promising trend of low soot and nitrogen oxides emissions from the combustion with n-butanol high pressure direct injection. However, due to the significant fuel property differences between n-butanol and diesel, the fuel delivery mechanism and combustion control algorithm need to be optimized for n-butanol use. A better understanding of the high pressure n-butanol injection characteristics, such as the injector opening/closing delays and spray droplet sizes, can provide the guidance for the control optimization and insights to the empirical observations of engine combustion and emissions. Meanwhile, the experimental data could be used for the model development of the n-butanol high pressure fuel injection events. In this work, injection rate measurement, high-speed video direct imaging, and phase Doppler anemometry (PDA) analysis of neat n-butanol and diesel fuel have been conducted with a light-duty high pressure common-rail fuel injection system. The injection rate measurement was performed with an offline injection rate analyzer at 20 bar backpressure to obtain the key parameters of the injector opening/closing delays, and the instantaneous pressure rise. The spray direct imaging was carried out in a pressurized chamber, and the PDA measurement was conducted on a test bench at ambient temperature and pressure. The injector dynamics and spray behavior with respect to the different fuels, variation of injection pressures, and variation of injection durations are discussed.

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