Abstract:
A study on the fluctuation of residual pressure of high-pressure fuel pipe of diesel engine was carried out by using AMESIM simulation software, which analyzed the influencing factors of residual pressure, eliminated the unfavorable factors, and selected the parameters, to reduce the failure of high-pressure fuel pipe.
I Introduction
Reliability Diesel engines occupat altiorem et altiorem proportionem et opus conditionibus Diesel engines dura. In praesens, ad consequi Euro II emissionem vexillum, iniectio pressura a recta iniectio Diesel Engines esse non minus quam LXXX ~ 100pta, et quidam ex illis habere altiorem iniectio pressura ad consequi ad euro III vexillum, aut ut animadverto ad consequi in III de his qui altius iniectio ad consequi ad Euro III, aut ad altiorem requisitis [I]. Ideo in cibus iniectio ratio summus pressura fuel pipe necessitates ad sustinere ingens onus, et pipe alternatim reciprocat fluctuations in pressura, consequens in Diesel iniectio efficientiam et iniectionem, ex ignitionem et combustione perficientur. In hoc charta, in usum amesim simulatio exemplar, studium Diesel engine residual pressura fluctuations in RELICTUM pressura factors, ut amplio operantes condiciones et perficientur Diesel Engines.
II modeling
A Diesel engine scriptor summus pressura cibus pipe coniungitur ad infusum sentinam ad unum finem, alterum finem coniungitur ad injector, in altum, quod est utilitas in altum est, quod in charta utilitas in altum est, in hoc quoddam, quod est in statu, in potestate, in potestate, ut in statu adimium, in potestate, in variabilibus, ut in inestimentorum, in idealis, in hac re potest, in potestate, ut in statu, in potestate, in potestate, ut in statu, in potestate, in potestate, ut in statu, in potestate, in potestate, in statu, in potestate, in potestate, in statu, in potestate, in potestate, ut in statu, ad imperium variabilis Et RELICTUM pressura in cibus pressura ad CERVIX finem, et invenies de influendo factores de fluctuation de residua pressura.
III experimentum studio
In the experiment, the basic parameters are: camshaft speed is 500r/min, high-pressure fuel line length is 0.9m, the thickness of the fuel line is 2.25mm, the diameter of the fuel line is 1.8mm, and the diameter of the nozzle hole is 0.26mm. Uno modo, longitudo cibus linea mutatur, et contrasting parametri 0.8m et 1m, quod in fig. I, cum incrementum in longitudinem linea, et adsum non esse in eodem tempore. Etiam determinat quod Pipeline non esse longum facile ad secundum infusionem in injector; non potest esse brevior et faciam cibus iniectio instabilitatem. Secondly, change the thickness of the high-pressure fuel line, the comparison parameters are 2mm and 2.5mm, as shown in Fig. 2, it can be found that, with the increase of the thickness of the high-pressure fuel line, the peak value of the residual pressure wave does not change, the phase is delayed, the wavelength becomes longer, and the residual pressure decays more quickly, and then change the diameter of the high-pressure fuel line, Et comparatio parametri sunt 1.7mm et 1.9mm, et experimenta invenitur, cum incremento diametri summus pressura cibus linea, intus brevior, cum fluvialem breviori, et residuam et citius. The experimental results show that, with the increase of the diameter of the high-pressure fuel pipe, the wavelength becomes shorter, the wave peak decreases, but there are irregular fluctuations, and the aperture diameter should not be too small, otherwise, it will increase the pulsation, which is due to the throttling effect as the aperture diameter decreases; Denique mutare diametrum orificium de CERVIX, quae habet a significant effectus in characteres in iniectio, et comparativum parametri sunt 0.28mm et 0.24mm, ut in ficis. III et IV: et non est inventus, cum mutatione in orificium diameter, in pressura et mutare et secundum hoc [I]. Through the experimental comparison found that, with the change of orifice diameter, the residual pressure will also produce corresponding changes [3], orifice diameter increases, the residual pressure wavelength becomes smaller, but the peak value is increased accordingly, which will abnormal injection [4], at the same time, this is also the main factor of fuel atomization is poor, but the diameter of the orifice is too small, it will to the increase in the Frequency de reciproca propagatione pressura fluctus intra fistulam, unde in Pipeline inconstans est, et pulsus augetur.
IV conclusioni
In hac charta, utimur a simulation exemplar et imperium variabilis modus ad studere ad influentiam factores in RELICTUM pressura de summus pressura cibus pipe.
