Measurement and Control of Fuel Injector Deposits in Direct Injection Gasoline Vehicles

Smith, S.; Imoehl, William

doi:10.4271/2013-01-2616

Cited by 13 publications

(4 citation statements)

References 10 publications

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“…Injectors that are open increasingly longer over the course of a test suggest that the flow rate has been compromised by deposits. Long-term fuel trim, as assessed using the on-board diagnostic system, provides similar information (Russell et al 2013, Smith andImoehl 2013).…”

Section: Inorganic Ions In Hydrocarbon Blendstocks and Additivesmentioning

confidence: 86%

Sulfate Salts in Gasoline and Ethanol Fuels -- Historical Perspective and Analysis of Available Data

McCormick¹,

Alleman²,

Yanowitz³

2017

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Section: Inorganic Ions In Hydrocarbon Blendstocks and Additivesmentioning

confidence: 86%

Sulfate Salts in Gasoline and Ethanol Fuels -- Historical Perspective and Analysis of Available Data

McCormick¹,

Alleman²,

Yanowitz³

2017

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“…Moreover, it was regarded to have great potential to downsize the gasoline engine. 7 However, the nozzle of the GDI injector was designed to extrude into the combustion chamber and had to be directly exposed to the high temperature combustion gas, making it easier for deposits to accumulate on it. Admittedly, the injector deposits both restricted the fuel flow 8−10 and altered the spray characteristics of the injectors.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, it was reported that the benefits of fuel consumption from the GDI engine could reach 15% in comparison with the port fuel injection (PFI) engine. − As a result, less CO 2 would be emitted. Moreover, it was regarded to have great potential to downsize the gasoline engine . However, the nozzle of the GDI injector was designed to extrude into the combustion chamber and had to be directly exposed to the high temperature combustion gas, making it easier for deposits to accumulate on it.…”

Section: Introductionmentioning

confidence: 99%

“…Besides, how the temperature impacted the quantity and the position of deposit formation inside the injector remained unclear. Also, most of the research that tended to identify the effects of some parameters on injector deposits was carried out based on engine tests, ,,,− where too many parameters should be considered to get the results, and the high labor and capital cost should be paid to support the extremely long running of the engine bench. Therefore, the impacts of one single parameter were not easily distinctly identified, and the high cost hindered the development in this field.…”

Section: Introductionmentioning

confidence: 99%

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Experimental Study on the Effects of Nozzle Temperature on Internal Deposits of a Gasoline Direct Injector

et al. 2018

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Internal deposit formation in the injector nozzle can both restrict the fuel flow and alter the spray characteristics of the injectors, which will lead to a loss in power and fuel economy, as well as an increase of exhaust emissions. Injector temperature is considered as a fundamental element among the parameters influencing the formation of deposits inside the injector. Although all the relative investigations have declared that the injector tip temperature showed significant relations with the formation of deposits inside, the exact relationship between the tip temperature and deposit formation was controversial since they reported quite different results. As a result, how the temperature affects the quantity and positions of deposit formation inside the injector remained unclear. In the present work, an experimental facility that simulated the heat environment when an injector for gasoline direct injection was working in the engine was employed to make internal deposits form inside the injector nozzle as well as to investigate the effects of the injector tip temperature on the formation of internal injector deposits. Also, an experimental investigation concerning the spray behaviors before and after internal deposit forming was reported. According to the results, it can be found that a suitable temperature interval existed, when beyond this temperature interval it was not easy for deposits to form inside the injector. In addition, the positions of deposits that accumulated in the injector were significantly different under different injector tip temperatures, which leads to the conclusion that the higher the tip temperature is, the deeper the positions of deposits are.

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Gasoline Particulate Filters—a Review

Joshi

Johnson

2018

Emiss. Control Sci. Technol.

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Measurement and Control of Fuel Injector Deposits in Direct Injection Gasoline Vehicles

Cited by 13 publications

References 10 publications

Sulfate Salts in Gasoline and Ethanol Fuels -- Historical Perspective and Analysis of Available Data

Sulfate Salts in Gasoline and Ethanol Fuels -- Historical Perspective and Analysis of Available Data

Experimental Study on the Effects of Nozzle Temperature on Internal Deposits of a Gasoline Direct Injector

Gasoline Particulate Filters—a Review

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