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Mechanism of Intake-Valve Deposit Formation Part 2: Simulation Tests
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Abstract
A laboratory test simulator has been developed to analyze the intake-valve deposit formation mechanism. The characteristics of the deposits formed with the simulator were compared with those of the real engine deposits. This comparison verified that the simulator deposits ILLEGIBLE nearly equal to those of engines. The influence of each parameter such as valve temperature, oil or gasoline quality was tested individually using this simulator. The intake valve temperature influenced the location and quantity of the deposits. The deposit formation significant in the temperature range of about 0-350 °C. The high-boiling components of oil ILLEGIBLE increased the deposits. The increase oxidation products and the decrease of antioxidants in used oil caused a significant increase of deposits. The commercial premium gasoline in Japan containing practical detergents ILLEGIBLE down and decreased the deposits. Another premium gasoline affected the oil quality, in increasing the deposits.
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Nomura, Y., Ohsawa, K., Ishiguro, T., and Nakada, M., "Mechanism of Intake-Valve Deposit Formation Part 2: Simulation Tests," SAE Technical Paper 900152, 1990, https://doi.org/10.4271/900152.Also In
References
- Esaki, Y. et al. Mechanism of Intake-Valve Deposit Formation '90 SAE Congress
- Bitting, B. et al. Intake Valve Deposits - Fuel Detergency Requirements Revisited SAE Paper 872117
- Lepperhoff, G. et al. Mechanism of the Deposit Formation at the Inlet Valves SAE Paper 872115
- Brian, Y. et al. Injection Deposits - The Tip of Intake System Deposit Problems SAE Paper 861534
- Tupa, R. C. Port Fuel Injection Deposits - Causes/Consequences/Cures SAE Paper 872113
- Richardson, C. B. et al. A Laboratory Test for Fuel Injector Deposit Studies SAE Paper 8992116
- Harrington, D. L. et al. Deposit-induced Fuel Flow Reduction in Multiport Fuel Injectors: An Experimental and Analytical Investigation SAE Paper 892123
- Martin, S. F. Intake System Deposits and Gasoline/Alcohol Blends PB 88-225123
- Bond, T. J. et al. Intake Valve Deposit Control - A Laboratory Program to Optimize Fuel/Additive Performance SAE Paper 892115
- Gohn, M. R. Evaluating Gasoline Additives for Intake-valve Cleanliness using Volkswagen Polo Engine SAE Paper 892118
- Daneshagari, D. A Test Procedure for Identifying the Gasoline's Deposit Formation Tendency on Intake Valves SAE Paper 892120
- Negnin, M. K. et al. Development of a Gasoline Additives Screening Test for Intake Valve Stickness and Deposit Levels SAE Paper 892121
- Bailey, B. K. et al. Gasoline Deposit Mechanism on Aluminum at Various Temperatures SAE Paper 892117