Accession Number:

ADA000921

Title:

Development of a Bench Procedure for Evaluating the Effectiveness of Dispersant -- Detergent Gasoline Additives. Phase I.

Descriptive Note:

Interim rept.,

Corporate Author:

SOUTHWEST RESEARCH INST SAN ANTONIO TEX ARMY FUELS AND LUBRICANTS RESEARCH LAB

Personal Author(s):

• Johnson,A. A.
• Marbach,H. W. , Jr

Report Date:

1974-06-01

Pagination or Media Count:

30.0

Abstract:

The report covers work undertaken to develop a laboratory bench procedure for the evaluation of dispersant-detergent gasoline additive effectiveness in controlling andor inhibiting engine intake systems deposition. A full-size evaluation procedure was selected for use as a baseline tool and a generator of deposits and deposit-causing precursors. This procedure accelerates carburetor throat and intake system deposits by recycling the crankcase off-gases back into the intake system via the main carburetor air stream. The studies to date have shown that inorganic acids in the off-gas react with the fuel to form carburetor throat deposits, and inorganic acid precursors can be easily generated in the laboratory, eliminating the need for the engine-combustion process.

Descriptors:

• *LABORATORY TESTS
• *DISPERSANTS
• *DETERGENTS
• *GASOLINE
• DEPOSITS
• ADDITIVES
• INHIBITORS
• INLETS
• PISTON ENGINES
• INORGANIC ACIDS
• CARBURETORS

Subject Categories:

• Test Facilities, Equipment and Methods
• Fuels
• Reciprocating and Rotating Engines

Distribution Statement:

APPROVED FOR PUBLIC RELEASE