The Effects of Fuel Composition and Fuel Additives on Intake System Detergency of Japanese Automobile Engine 790203
The effects of fuel composition and additives (antioxidant and detergent) on intake system cleanliness have been studied using Japanese automobile engines equipped with EGR systems. The following conclusions were obtained.
Cleanliness of the intake system (carburetor and intake manifold) is influenced remarkably by the fuel characteristics, namely the olefin content and the type of antioxidant.
The detergent gives a large improvement in the cleanliness of carburetors and intake manifolds, but shows little or no effect on the intake valves.
A carrier oil used together with the detergent does reduce the deposit formation especially on the intake valves.
The increase of the aromatic content appears to augment the deposits on the cylinder head.
Citation: Nishizaki, T., Maeda, Y., Date, K., and Maeda, T., "The Effects of Fuel Composition and Fuel Additives on Intake System Detergency of Japanese Automobile Engine," SAE Technical Paper 790203, 1979, https://doi.org/10.4271/790203. Download Citation
T. Nishizaki, Y. Maeda, K. Date, T. Maeda
Nippon Mining Co., Ltd.
1979 Automotive Engineering Congress and Exposition