Heavy Duty Diesel Deposit Control.... Prevention as a Cure

Hutchings, Miles; Chasan, David E.; Burke, Ronald; Odorisio, Paul A.; Rovani, Margarita; Wang, Wilhelm

doi:10.4271/972954

Cited by 21 publications

(11 citation statements)

References 13 publications

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“…At relatively low piston skirt temperatures (200-260C) a varnish type deposit predominates (7). The primary source of piston deposits is the lubricant and lubricant oxidation is the primary cause of deposit formation (7). Diesel engine deposits also increase with the oil consumption (8), the piston temperatures (12) and the oil soot content (12).…”

Section: Introductionmentioning

confidence: 99%

“…The above review has emphasized the importance of CCDs in emissions and lubricant quality. At the same time as diesel emissions regulations have come into force the trends in the diesel design, towards higher ring zone temperature and pressure, piston redesign for higher top rings, higher piston temperatures, and extended service interval requirements, are making it increasingly difficult to control deposit formation in the engine with traditional oil additive technology (7). Diesel deposits can be classified into two types: ring zone and piston skirt deposits (varnish).…”

Section: Introductionmentioning

confidence: 99%

“…The higher ring zone temperatures (325-360C) promote thermal degradation of the lubricating oil and unburned/oxidized fuel components producing a 'carbon' deposit. At relatively low piston skirt temperatures (200-260C) a varnish type deposit predominates (7). The primary source of piston deposits is the lubricant and lubricant oxidation is the primary cause of deposit formation (7).…”

Section: Introductionmentioning

confidence: 99%

“…The extended service requirements are making the control of CCD increasingly difficult (7). The primary source of piston deposits is the lubricant (8) and oxidation of the lubricant is the primary cause of deposit formation (9).…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

The Influence of an Oil Recycler on Emissions with Oil Age for a Refuse Truck Using in Service Testing

Andrews¹,

Li²,

Hall³

et al. 2001

SAE Technical Paper Series

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The Influence of an Oil Recycler on Emissions with Oil Age for a Refuse Truck Using in Service Testing

Andrews¹,

Li²,

Hall³

et al. 2001

SAE Technical Paper Series

View full text Add to dashboard Cite

“…The primary source of piston deposits is the lubricant (8) and oxidation of the lubricant is the primary cause of deposit formation (9). In cylinder deposits consist of ash from the lubricating oil additives, carbon and absorbed unburned fuel and lubricating oil (8,10).…”

Section: Introductionmentioning

confidence: 99%

Improvements in Lubricating Oil Quality by an On Line Oil Recycler for a Refuse Truck Using in Service Testing

Andrews¹,

Li²,

Jones³

et al. 2001

SAE Technical Paper Series

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A method of cleaning lubricating oil on line was investigated using a fine bypass particulate filter followed by an infra red heater. Two bypass filter sizes of 6 and 1 micron were investigated, both filter sizes were effective but the one micron filter had the greatest benefit. This was tested on two nominally identical EURO 1 emissions compliance refuse trucks, fitted with Perkins Phazer 210Ti 6 litre turbocharged intercooled engines and coded as RT320 and RT321. These vehicles had lubricating oil deterioration and emissions characteristics that were significantly different, in spite of their similar age and total mileage. RT321 showed an apparent heavier black smoke than RT320. Comparison was made with the oil quality and fuel and lubricating oil consumption on the same vehicles and engines with and without the on-line bypass oil recycler. Engine oils were sampled and analysed about every 400 miles. Both vehicles started the test with an oil drain and fresh lubricating oil. The two refuse trucks were tested in a different sequence, the RT320 without the recycler fitted and then fitted later and the RT321 with the recycler fitted and then removed later in the test and both without any oil change. The RT320 was also the one with the finer bypass filter. The test mileage was nearly 8,000 miles both trucks. The amount of fresh oil top up was monitored and the results corrected for this dilution effect. The results showed that the on line bypass oil recycler cleaning system reduced the rate of fall of the TBN by 23% and 49% for two trucks respectively. A 73% reduction in the rate of increase of the TAN incurred for one of the trucks. The soot in oil was reduced by ~70% on average for both trucks.The reduction in the rate of carbon accumulation in oil was 55% for the refuse truck with heavy smoke emissions. There was a 56% reduction in iron. The rate of oxidation, nitration and sulphation of oils was significantly reduced. There was an improvement of the fuel economy of about 3%. The lubricating oil consumption was reduced by 40% for 1 micron recycler filter and 30% for 6 micron filter.

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Oxidative stabilisation of synthetic fluids and vegetable oils

Hamblin

1999

J of Synthetic Lubrication

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The use of ashless antioxidants to increase the useful working life of synthetic fluids, such as polyalphaolefins, polyalkylene glycols and carboxylic acids, is discussed, and some general guidelines are proposed. The application of ashless antioxidants in controlling the oxidative degradation of several dtfferent types of biodegradable vegetable oil is illustrated. The action of the naturally occurring antioxidant, vitamin E, in some of these fluids has been examined and some preliminary results are reported.

show abstract

Heavy Duty Diesel Deposit Control.... Prevention as a Cure

Cited by 21 publications

References 13 publications

The Influence of an Oil Recycler on Emissions with Oil Age for a Refuse Truck Using in Service Testing

The Influence of an Oil Recycler on Emissions with Oil Age for a Refuse Truck Using in Service Testing

Improvements in Lubricating Oil Quality by an On Line Oil Recycler for a Refuse Truck Using in Service Testing

Oxidative stabilisation of synthetic fluids and vegetable oils

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