ASTM D5862 Standard Test Method for Evaluation of Engine Oils in Two-Stroke Cycle Turbo-Supercharged 6V92TA Diesel Engine
6. Apparatus - General Description
6.1 The test engine is based on an 9 L Detroit Diesel 6V92TA, turbo-supercharged, aftercooled, two-stroke cycle diesel engine.
6.2 Use an engine test stand equipped to control engine speed and load, various temperatures, and other parameters.
6.3 Use appropriate air conditioning or heating apparatus, or both, as necessary to control the temperature of the intake air.
6.4 Use an appropriate fuel supply system.
7. Apparatus - Laboratory and Test Stand Requirements
7.1 Laboratory - Observe the following laboratory conditions to ensure good control of test operations and good repeatability:
7.1.1 Maintain the ambient laboratory atmosphere relatively free of dirt, dust, and other contaminants.
7.1.2 Control the temperature of the room in which parts measurements are made so that the temperature for after-test measurements is within a range of +/-3°C (+/-5°F) relative to the temperature for the before-test measurements. If difficulty of parts fit during engine assembly is encountered, consider the effects of temperature coefficient of expansion.
7.2 Engine Stand Requirements - A typical test stand is shown in Annex A2 (Fig.A2.1).
7.2.1 Engine Speed and Load Control - Dynamometer shall be able to maintain engine speeds of 1200 and 2300 r/min at the torques of 1850 N-m and 1550 N-m, respectively (approximately 373 kW). Load ramping is not required.
7.2.2 Engine Cooling System - Use a suitable external engine cooling system to maintain the specified engine coolant temperature during both the operating and cool-down portions of the test. The system shall incorporate the following features:
7.2.2.1 Cooling capacity of 370 kW (21000 Btu/min).
7.2.2.2 Flow capacity of 760 L/min (200 gal/min).
7.2.2.3 Temperature control with coolant out temperature maintained at 84 +/- 2°C (183 +/- 4°F).
7.2.3 Air Inlet System:
7.2.3.1 Shall have a capacity of 34 m3/min (1200 cfm), at a temperature of 35 +/- 3°C (95 +/- 5°F).
7.2.3.2 Shall utilize 13-cm (5-in.) inside diameter pipe as shown in Fig.1.
7.2.3.3 Shall have an air inlet restriction of 2.5 +/- 0.7 kPa (10 +/- 3 in. H2O).
7.2.4 Exhaust System:
7.2.4.1 Shall have a flow capacity of 85 m3/min (3000 cfm) at 510°C (950°F).
7.2.4.2 Shall utilize a 10-cm (4-in.) inside diameter pipe as shown in Fig.1.
7.2.4.3 Shall have backpressure of 3.2 +/- 0.8 kPa (0.95 +/- 0.25 in. Hg).
7.2.5 External Oil Cooling System - Incorporate the external oil cooling system shown in Annex A2 (Fig.A2.2). A bracket for this system is shown in Annex A2 (Fig.A2.3). The oil gallery set-point is to be 102 +/- 1°C (216 +/- 2°F) during the load mode, and 111 +/- 1°C (232 +/- 2°F) during the power mode. The table in Annex A2 (A2.1) describes the parts required for the external cooler.
7.2.6 Adjustable Dipstick - Shall be used to monitor oil consumption. The construction of this dipstick is shown in Annex A2 (Fig.A2.4).
7.2.7 Fuel System - Use a fuel system with 11 500 L (3000 gal) capacity. It shall have a mass flow capability of 92 kg/h (202 lbm/h) minimum.
7.3 Drawings - Obtain the equipment drawings referenced in the Annex A1 of this test method from the ASTM Test Monitoring Center. Because the drawings may not be to scale, when using them to fabricate special parts, use the dimensions specified. Do not use a drawing as a pattern. Drawing dimensions are considered to be correct when the temperature of the equipment is 22°C (72°F), unless otherwise specified.
7.4 Specified Equipment - Use the equipment specified in the procedure whenever possible. Substitution of equivalent equipment is allowed, but only after equivalency has been proven to the satisfaction of the ASTM Test Monitoring Center. See Annex A2 (Fig.A2.1) for a view of the engine and attached apparatus used in this test method.
