Evaluation of the effect of the addition of bioethanol to gas oil on coking diesel engine injector terminals

Abstract

The article presents the results of empirical research and their analysis regarding the impact of diesel oil and diesel oil mixture with bioethanol on coking the test injector nozzles of the XUD9 engine from PSA. The research included three fuel deals: diesel fuel as the base fuel and diesel oil mix with ONE10 bioethanol (10% bioethanol plus diesel oil (V/V)), ONE20 (20% bioethanol plus diesel oil (V/V)). They were conducted on the basis of CEC PF-023 developed by CEC (Coordinating European Council). Each of the above-mentioned fuels was tested using a new set of injectors. The propensity of the fuel for coking the injector tips was expressed as a percentage reduction in the air flow through the nozzles of each injector for the given sheer increments. The test result was the average percentage of airflow reduction for all nozzles at 0.1 mm spike increments and was measured according to ISO 4010 "Diesel engines. Calibrating nozzle, delay pintle type”. The test results for individual atomizers of the above-mentioned test engine in the area of sediment formation from flowing fuel shown a lower tendency to coke the injectors using diesel fuel-bioethanol in comparison to the use of pure diesel oil. Based on the CEC PF-023 test, it can be noticed that the level of contamination of the tested injectors for ONE10 fuel is about 3% lower, and for ONE20 fuel is about 4% lower than the level of pollution for diesel fuel.

Assessment of the Impact of the Addition of Biomethanol to Diesel Fuel on the Coking Process of Diesel Engine Injectors

“…The PSA XUD9 A/L engine used for testing based on the CEC F-23-01 procedure was the engine (with the parameters shown in Table 1), with indirect injection equipped with a Ricardo swirl chamber, with Lucas RDNO SDC 6850 pintle injectors (non-flattened), equipped with Lucas Roto Diesel DCP R8443B910A centrifugal fuel pump and a nozzle opening pressure of 11.5 MPa [24,25]. The empirical research of coking of injectors was conducted on a test stand at the Vehicles Institute, Warsaw University of Technology, as shown in Figure 1.…”

“…The air consumption measurement system consists of a laminar flow meter type E7035 and a differential pressure meter type MK1, -The standard measurement systems for engine crankshaft rotational speed, torque, fuel consumption, oil and coolant temperature, and other devices that meet the requirements of PN-88/S-02005, -A device for determining the injector opening pressure, produced by L. Hartridge Ltd., -A device for measuring the throughput of nozzles according to ISO 4010" [25]. The torque measurement error on our dynamometer controlled by the Schenck system was ±3 Nm, with a rotational speed of ±5 rpm.…”

Bulletin of the Polish Academy of Sciences: Technical Sciences

“…Biodiesel is one of the candidates. Biofuel, in this case, is defined as fatty acid esters from vegetable oils or animal fats [1][2][3]. These types of oils have significant physicochemical differences compared to traditional diesel fuel; therefore, their processing is required before use [3][4][5].…”

“…Biofuel, in this case, is defined as fatty acid esters from vegetable oils or animal fats [1][2][3]. These types of oils have significant physicochemical differences compared to traditional diesel fuel; therefore, their processing is required before use [3][4][5]. The treatment process can bring the physicochemical parameters of biofuels closer to traditional diesel oil only to a limited extent.…”

“…Not always good for us as users. This type of fuel has operation problems during the winter period, especially with the cloud point and cold filter blocking temperature [2,3]. the gap in knowledge about the possibility of using mixtures of methyl ester-bioethanol to power a compression ignition engine.…”