Euro Dizel kvalitet

[Nelson]

Senzor kliktanja ili detonacija stručnije Knock sensor , imaju benzinci još od osamdesetih godina.
CR diesel preko korekcija dizni pegla anomalije u kretanju klipa, različitosti kompresije u pojedinim cilindrima i slično.

[DS9]

Hvala ti vrlo na odgovoru, a ako sam ja dobro razumeo sistem preko knock senzora (kod benzinaca) je precizniji nego sistem korekcija dizni kod CR? Odnosno precizniji u smislu da je zavisniji od osobina benzina tj. detonacija?

[Nelson]

Kod diesel-a uzima se ugaona brzina (ubrzanje) radilce preko senzora radilice i na osnovu toga i karakteristika dizni se vrše korekcije kako bi motor imao što mirniji i ravnomerniji rad. Novija tehnologija (koristi se već neko vreme) jesu senzori pritiska integrisani u grejače. Ti grejači su papreno skupi ali opet daju daleko preciznije podatke za svaki cilindar i korekcije u hodu.

Cylinder Pressure SensorsA cylinder pressure sensor is integrated into eachof the Glow Plugs. The glow element is attachedto an extension, which can apply pressure to adiaphragm. The diaphragm has strain gauges thatchange resistance by deformation. The integratedelectronics calculate tension, which is proportional tothe combustion chamber pressure.Signal UseThe pressure sensor collects cylinder burn-data suchas the burn moment and the situation of the burnin relation to the crankshaft. This can result in anincrease or decrease of the injection amount, as thepressure is indirectly related to the injection amount.Correcting the injection using pressure sensorinformation balances the injection for all cylinders.In addition, this correction applies to manufacturingtolerances and engine aging.As a direct result of the pressure sensors, emissiontolerances are clearly reduced over the life span ofthe engine.The regulation of the burn is accomplished by shiftingthe start of injection. Thus, the burn stabilizes duringtimes of very large exhaust recirculation rates andmisfi res and other running issues can be avoided.Also, the pressures can help to balance the timedelays caused by bad fuel (low Cetane).Effect of FailureIf one of the pressure sensors fails, a substitute valuewill be used from the other pressure sensors.

[DS9]

Hvala vrlo