Analysis of the Combustion Process in a Transparent Passenger Car DI-Diesel Engine by Means of Multidimensional Optical Measurement Techniques

Fettes, C.; Schraml, Stephan; Heimgärtner, Corren; Leipertz, Alfred

doi:10.4271/2000-01-2860

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…This chapter contains the results of the fuel injection system measurements within an optically accessible engine and the comparison between the computed and measured parameters. All measurements were carried out within an single-cylinder transparent engine based on the AUDI V6 engine, equipped with a Bosch Common Rail Injection System [7] [8]. We used a BOSCH DLLA 6 HD 360 6-holes mini-sac-hole nozzle with a flow value μ = 0.77.…”

Section: Comparison Between Measured and Calculated Valuesmentioning

confidence: 99%

Mathematical Model for the Injector of a Common Rail Fuel-Injection System

Marčič¹,

Marčič

Praunseis³

2015

ENG

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The paper describes a Diesel fuel injection process. Computer simulation was carried out together with measurement of the Common Rail accumulator fuel-injection system. The computer simulation enables the observation of the phenomena from rail pressure, being the input data for injection parameters calculations, to the injection rate. By means of computer simulation, the pressure values in specific sections of the injection nozzle may be computed, the needle lift, injection rate, total injected fuel, time lag from injector current to first evidence of injection process and other time-lags between various phases of the injection process. The injection rate provides input data for spray computer simulation. Measurements of injection and combustion were carried out within a transparent research engine. This engine is a single-cylinder transparent engine based on the AUDI V6 engine, equipped with a Bosch Common Rail Injection System. The comparison between the computed and measured injection parameters showed good matching.

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Section: Comparison Between Measured and Calculated Valuesmentioning

confidence: 99%

Mathematical Model for the Injector of a Common Rail Fuel-Injection System

Marčič¹,

Marčič

Praunseis³

2015

ENG

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“…A combination of two different lasers and camera systems allows for − simultaneously detecting Mie scattering of the injected fuel, the laser-induced fluorescence (LIF) of fuel and vapor, the premixed combustion mode, and the diffusion mode.…”

Section: Comparison Of Measured and Calculated Valuesmentioning

confidence: 99%

Calculation and Measurements of Self-Ignition Nuclei in Diesel Combustion

et al. 2010

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This paper describes a computer simulation of diesel spray formation and the locations of self-ignition nuclei. The spray is divided into small elementary volumes, in which the amounts of fuel, fuel vapors, and air and mean, maximum, and minimum fuel droplet diameters are calculated, as well as their number. The total air/fuel and air/fuel-vapor ratios are calculated for each elementary volume. The paper introduces a new criterion for determining self-ignition nuclei based on assumptions that the strongest self-ignition probability lies in those elementary volumes containing the stoichiometric air ratio, where the fuel is evaporated or the fuel droplet diameter is equal to or lower than 0.0065 mm. The most efficient combustion with regard to consumption and emission will be in those elementary volumes containing the stoichiometric air ratio and fuel droplets with the lowest mean diameters. Measurements of injection and combustion were carried out in a transparent research engine. This engine is a single-cylinder transparent engine based on the Audi V6 engine, equipped with a Bosch common rail injection system. The optical part of the experimental setup contains two different lasers, while the camera system allows for simultaneously detecting four signals: the Mie scattering of the injected fuel, the laser-induced fluorescence (LIF) of fuel and vapor, light emissions from the flame indicating the premixed combustion mode, and flame emissions indicating the diffusion mode. A comparison of the computed points to the highest self-ignition probability and the measured points where self-ignition occurred showed good matching.

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A simplified model for a diesel spray

Marčič

Wensing

et al. 2018

Fuel

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Analysis of the Combustion Process in a Transparent Passenger Car DI-Diesel Engine by Means of Multidimensional Optical Measurement Techniques

Cited by 7 publications

References 4 publications

Mathematical Model for the Injector of a Common Rail Fuel-Injection System

Mathematical Model for the Injector of a Common Rail Fuel-Injection System

Calculation and Measurements of Self-Ignition Nuclei in Diesel Combustion

A simplified model for a diesel spray

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