Repeatability of Intake Valve Deposit Measurements in the CRC 2.3L Ford Intake Valve Deposit Dynamometer Test

Corkwell, Keith C.; Firmstone, G. P.

doi:10.4271/962011

Cited by 4 publications

(2 citation statements)

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“…Within Direct injection (DI) engines there is no washing effect of fuel spray, so there is an increased tendency of deposit formation on the intake valves' surface, which makes this problem more significant [5][6][7][8][9]. Most studies on deposit formation have consisted of road or dynamometer tests [9][10][11]. Although using the actual engine tests provides the actual amount of the deposits formed in different parts of the engine, the effect of individual influential parameters remains unknown.…”

Section: Introductionmentioning

confidence: 97%

“…Belincanta [12] has studied gasoline deposits using both bench setup and test engine, showing that test setup can be used as an alternative to engine tests. A quick review of the studies on deposit formation shows that most of them are concerned with the effect of fuel and fuel additives [9,10,13,14]. One of the main sources of deposit formation on the intake valve surface is blow-by gases; these gases that enter the valve chamber contain some lubricant oil micro-droplets, which were not removed in the oil separator.…”

Section: Introductionmentioning

confidence: 99%

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Taguchi optimization of micron sized lubricant oil droplet deposition on a hot plate

et al. 2015

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The deposition of micron sized lubricant oil droplets similar to oil droplets in blow-by gases of Internal combustion (IC) engines on a hot flat plate was studied using a round impinging jet configuration. Five parameters which simulate the different operational conditions in IC engines were chosen: The impaction nozzle's outlet diameter, additional air flow rate, plate angle, plate temperature, and nozzle to the plate distance. An Experimental test-rig was constructed to acquire deposit weight with different parameter values. To find the conditions of minimum deposition, the deposit's weight was optimized using the Taguchi design of experiment method with respect to the design parameters. Using the experimental data, the predicted optimal value of the deposit weight was confirmed. Analysis of variance showed that plate angle is the most influential factor in deposition of fine oil droplets. Scanning electron microscopy (SEM) was used to investigate the mechanism of deposition.

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