How to Warm Up RON/MON Octane Engine?

The RON/MON octane engine shall be warmed-up for 40-60 min. for the purpose of stabilizing the octane engine critical variables and operating conditions, so as to obtain accurate and stable test results, before performing a fuel sample octane rating.

RON/MON Octane Engine Warm-up Operation Steps:

1. Set the power supply switch to “ON” after completed all preparations.
2. Set the lubricating oil heating switch to “ON” until heating the lubricating oil to 40℃(104°F).
   NOTE: Do not start the RON/MON octane engine unless the crankcase oil temperature has reached at least 40℃(104°F). Disregarding this information could result in product damage.
3. Check that the engine crankcase oil temperature has reached at least 40℃(104°F) by observing the oil temperature controller reading on the front of the instrument panel.
4. ■For RON(Research Method), set the speed switch to 600.
   ■For MON(Motor Method), set the speed switch to 900.
5. Set the start switch to “ON”. Observe the oil pressure gauge and when it reaches 172 – 207 kPa.
6. Set the intake air heater switch to “ON”.
7. For Motor Method, set the mixture manifold heater switch to “ON”.
8. Set the ignition switch to “ON”.
9. Lubricate the cylinder head assembly by introducing a drop or two of SAE 30 Grade oil at each of the locations indicated in below Figure.

During RON/MON octane engine warm-up, periodically monitor the operating conditions. Important conditions that may need adjustment are as follows:

■ After four or five minutes of operation, adjust the cylinder height, adjusting the C.R. until a light knock sound is heard. As the octane engine continues to warm-up, it is normal for this knock level to increase.
■ With the engine knocking, adjust the fuel level and set it to achieve audible maximum knock intensity.
■ Check engine crankcase oil level that should be near middle of sight glass with the engine warmed up.
■ Observe intake air temperature and, if applicable, the mixture temperature, both of which should equilibrate at the values specified for the appropriate standard test method.
■ Check that cooling water discharge is occurring and that the discharged water temperature is warm but not steaming.