Engine Oil Additive Impacts on Low Speed Pre-Ignition

Fletcher, Kristin A.; Dingwell, Lisa; Yang, Kongsheng; Lam, William Y.; Styer, Jeremy P.

doi:10.4271/2016-01-2277

Cited by 35 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some examples are sulfur, phosphorus, and chlorinebased EP additives, which are avoided due to corrosion concerns [3,10]. The key is to determine if these additives will bring more benefits by reducing adhesive wear or harm by increasing corrosion [1,3,[11][12][13]. In short, the use of aftermarket additives certainly brings possibilities to improve oil performance but might also cause a chemical imbalance in the lubricant, degrading its overall performance [12].…”

Section: Additivesmentioning

confidence: 99%

Effect of an Aftermarket Additive in Powertrain Wear and Fuel Consumption of Small-Capacity Motorcycles: A Lab and Field Study

et al. 2022

View full text Add to dashboard Cite

Metal conditioners (MC) are friction, wear, and heat-reducing agents between metal components in motion and are mainly used in engines and transmission boxes as aftermarket additives. Laboratory and field tests were conducted to assess the performance of a commercial MC. Laboratory tribotests revealed the MC’s potential to reduce wear and friction in lubricated steel contacts. Field studies were performed on two new motorcycles (160 cc) under urban driving conditions for 15,000 km. The physico-chemical properties of the used oils were similar and within the acceptable limits provided in the literature. The FTIR results showed that specific components in the MC formulation do not allow for a direct comparison between oils and their mixtures with MC. Regarding engine wear, MC provided overall aluminum and iron metal parts protection, mainly in the first 7000 km of engine break-in, but a higher wear of copper-containing parts, although at levels below the warning limits. Accurate measurements of engine components demonstrated there were changes of less than 0.05% in the cylinder, piston, and transmission system pieces, except for gear #5. The lubrication of the crown, pinion, transmission chain and gear #5 with the MC significantly increased their wear resistance. The motorcycle driven with MC maintained higher average fuel economy improvements (+1 km/L), representing a 2.5% gain compared to the other motorcycle. Although only two motorcycles were tested, the laboratory and field results suggested that mixing MC with the fully formulated oil (10W-30) reduces wear and friction during the break-in period.

show abstract

Section: Additivesmentioning

confidence: 99%

Effect of an Aftermarket Additive in Powertrain Wear and Fuel Consumption of Small-Capacity Motorcycles: A Lab and Field Study

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Kassai et al [86] observed that Ca additives only had an effect in premixed PRF/air mixtures, especially with lower research octane number (RON) values, while no noticeable effect was observed with a premixed methane/air mixture. In contrast to Ca, Zn and Mo added to the oil in the form of zinc dialkyldithiophosphate (ZnDTP) and molybdenum dialkyldithiocarbamate (MoDTC), respectively, are regarded as pre-ignition inhibitors [83,86,88,89,[91][92][93][94]. However, Hayakawa et al [95] reported that adding ZnDTP and MoDTC up to 800 and 980 ppm to the fuel had no effect on fuel auto-ignition.…”

Section: Additivesmentioning

confidence: 99%

Recent Progress in Automotive Gasoline Direct Injection Engine Technology

Shuai

et al. 2018

Automot. Innov.

View full text Add to dashboard Cite

Gasoline direct injection (GDI) engines are currently the dominant powertrains for passenger cars. With the implementation of increasingly stringent fuel consumption and emission regulations worldwide, GDI engines are facing challenges owing to high particulate matter emissions and a tendency to knock, leading to a change in the research and design (R&D) issues compared with those in the twentieth century. This paper reviews the progress in research regarding GDI engine technologies over the past 20 years, focusing on combustion system configurations, and also highlights common issues in GDI R&D, including preignition and deto-knock, soot formation and PM emissions, injector deposits and gasoline compression ignition (GCI). First, an overview of recent developments in the field as driven by regulations is provided, following which progress in injection and combustion systems is examined. Third, the review addresses the occurrence and mechanism of deto-knock and considers means of suppressing this phenomenon. The fourth section discusses soot formation mechanisms and particulate matter emission characteristics of GDI engines and describes the application of gasoline particulate filter (GPF) after-treatment. The subsequent section summarizes studies regarding injector deposit formation, as well as pioneering research into GCI combustion modes. Finally, a summary and future prospects for GDI engine technologies are provided.

show abstract

“…Therefore, this review may be applicable to a global understanding of fuel economy. It is critical to distinguish between research efforts where lubricants have a direct impact on fuel efficiency versus research where lubricants ensure that mechanical systems designed to improve fuel efficiency operate properly [47][48][49][50][51][52][53][54][55][56]. For example, when operating engines at low speeds in order to improve the conversion of chemical to mechanical energy, pre-ignition events (LSPI) can occur that cause damage to the engine.…”

Section: Introductionmentioning

confidence: 99%

“…For example, when operating engines at low speeds in order to improve the conversion of chemical to mechanical energy, pre-ignition events (LSPI) can occur that cause damage to the engine. Preventing LSPI enables the operation of engines under more efficient conditions so that fuel economy is improved [51][52][53][54][55][56]. There are engine oil additives that affect LSPI and fuel efficiency, and those will be discussed in Section 4.…”

Section: Introductionmentioning

confidence: 99%

Common Properties of Lubricants that Affect Vehicle Fuel Efficiency: A North American Historical Perspective

Devlin¹

2018

Lubricants

View full text Add to dashboard Cite

The development of advanced lubricants to improve vehicle fuel efficiency can appear to be as simple as lowering the viscosity and frictional properties of a fluid. However, applied research studies have shown that it is quite difficult to quantify the fuel efficiency properties of advanced lubricants in vehicles. A review of the historical research predominantly performed in North America in this area reveals that there are many factors to consider in order to demonstrate the effectiveness of advanced lubricants. First, the methodology used to measure vehicle fuel efficiency will impact the results since there are many factors not related to the lubricant which will influence vehicle fuel efficiency. Second, developing advanced fuel-efficient lubricants under well controlled conditions overlooks the issue that lubricant properties such as viscosity and friction affect the operating conditions encountered by the lubricant in the vehicle. Finally, the physical properties of lubricants that historically control fuel economy do not have the same effect on fuel efficiency in all vehicles. The proper vehicle or system level test needs to be selected to properly assess the benefits of new advanced lubricants.

show abstract

Engine Oil Additive Impacts on Low Speed Pre-Ignition

Cited by 35 publications

References 23 publications

Effect of an Aftermarket Additive in Powertrain Wear and Fuel Consumption of Small-Capacity Motorcycles: A Lab and Field Study

Effect of an Aftermarket Additive in Powertrain Wear and Fuel Consumption of Small-Capacity Motorcycles: A Lab and Field Study

Recent Progress in Automotive Gasoline Direct Injection Engine Technology

Common Properties of Lubricants that Affect Vehicle Fuel Efficiency: A North American Historical Perspective

Contact Info

Product

Resources

About