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Lubrication Fundamentals 2011 Part 3

Tham khảo tài liệu 'lubrication fundamentals 2011 part 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Table 3.4 Gasoline and Diesel Engine Oil Tests Engine test Principle parameter s evaluated L-38 Sequence IID Sequence IIIE Sequence VE KA24E Sequence VIB Mack T-6 Mack T-7 Mack T-8 T-8E Mack T-9 Cat 1-K Cat 1M-PC Cat 1-N Cat 1-P DD 6V-92TA Cummins M-11 GM 6.2 6.5 liter Bearing corrosion Rust and corrosion Oxidation varnish cam wear Sludge cam wear Cam wear Fuel economy Oil consumption oxidation piston cleanliness Oil thickening Oxidation soot filterability Ring-liner wear bearing wear extended drain capability Piston cleanliness oil consumption ring and liner scuffing Piston cleanliness varnish ring and liner wear Piston cleanliness ring and liner wear oil consumption Deposit control oil consumption Wrist pin bushing wear liner scuffing port deposits Bearing corrosion sliding wear filterability sludge Roller cam follower wear ring sticking for their specific engines. Examples are the Mack EO-L EO-L Plus and EO-M using the Mack T-6 T-8 and T-9 engine tests. Cummins Diesel uses the NTC 400 and the M-11 tests. All these engine tests are very expensive to develop and run significantly increasing the cost of engine oil development and testing. All these tests can be grouped into eight categories of performance measurement 1. Tests for oxidation stability and bearing corrosion protection 2. Single-cylinder high temperature tests 3. Multicylinder high temperature tests 4. Multicylinder low temperature tests 5. Rust and corrosion protection 6. Oil consumption rates and volatility 7. Emissions and protection of emission control systems 8. Fuel economy A summary of the common engine oil tests used in the U.S. is shown in Table 3.4. Some additional new engine tests or extensions of existing engine tests are used to evaluate the ability of oils to provide extended drain capability. The ability to extend drain intervals is important to builders because of the pressure from users to reduce costs associated with maintenance and also to conserve nonrenewable resources. Extended .