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CFR-A1 Auto
Automated Octane Rating Unit
Fully automated RON / MON knock rating of gasoline and aviation fuels
The CFR-A1 Auto determines and certifies the knock rating of automotive gasoline and liquid spark-ignition aviation fuels in terms of Research Octane Number (RON) and Motor Octane Number (MON), over a working range of 40 to 120 octane number. The sample fuel is tested in a standardized single-cylinder, four-stroke, variable compression ratio, carbureted CFR engine under a defined set of operating conditions. With one-button operation, the unit automatically and precisely searches for the fuel level giving maximum knock intensity, with no manual adjustment required.
ASTM D2699ASTM D2700IP 236IP 237EN ISO 5163EN ISO 5164GB/T 5487GB/T 503
Key features
Engine complying with CFR structure- Integral cast iron cooling jacket conforming to CFR specifications, with the cylinder and cylinder head cast as one piece
- CFR standard crankcase with 5 gears and 2 balance modules
- Engine mounted on the right side with the turning check system at the front
Automatic one-button operation- Automatic switching of carburetor bowls; the complete test runs with a single button
- One system for both methods, with quick and easy switching between RON and MON
- Automatic, precise search for the fuel level giving maximum knock intensity, with no manual operation
- Automatic barometric pressure compensation module ensures accuracy of test data
Accurate and stable measurement and control- Precise compression ratio test method with built-in working curve for more accurate results
- Integrated control module monitors working conditions in real time and raises an alarm in abnormal situations
- High-precision negative-pressure fuel line (vertical), fuel metering line (horizontal) and air–fuel atomization line for accurate carburetor fuel control and stable test data
- Refrigerated negative-pressure fuel line and fourth carburetor bowl for testing light-component samples
- Powerful dual-circulation air conditioner supports the intake of large-bore engines
- Main unit integrates control of the air conditioner and circulating cooling water, with real-time status feedback
- Laser displacement sensor gives adjustment with no delay and provides limit safety protection
- Two-stage engine oil filtering and cooling for long-term stable operation
Comprehensive safety protection- Soft engine start with low starting noise, effectively reducing mechanical wear
- Liquid-level protection for the internal and external circulating cooling water
- Built-in WIFI lets the operator monitor and query data remotely
- Status light colour indicates the working state of the instrument
- Negative-pressure sensor displays engine operating pressure in real time
- Start-up time and accumulated test time are recorded automatically
Technical specifications
| Engine | | Test methods | ASTM D2699, ASTM D2700, IP 236, IP 237, EN ISO 5163, EN ISO 5164, GB/T 5487, GB/T 503 | | Working range | 40 – 120 octane number | | Cast iron cylinder bore (diameter) | 82.55 mm (3.250 in) | | Piston stroke | 114.30 mm (4.50 in) | | Cylinder displacement | 0.61 L (37.33 in³) | | Compression ratio range | Adjustable 4:1 – 18:1 | | Engine speed | 900 ± 9 rpm (Motor Method)
600 ± 6 rpm (Research Method) | | Operating conditions | | Lubricating oil pressure | 172 – 207 kPa (25 – 30 psi) | | Lubricating oil temperature | 57 ± 8 °C (135 ± 15 °F) | | Cylinder jacket coolant temperature | 100 ± 1.5 °C (212 ± 3 °F) | | Spark plug gap | 0.51 ± 0.13 mm (0.020 ± 0.005 in) | | Intake and exhaust valve clearance (engine running and hot) | 0.20 ± 0.025 mm (0.008 ± 0.001 in) | | Intake air temperature (Motor Method) | 38 ± 2.8 °C (100 ± 5 °F) | | Intake mixture temperature (Motor Method) | 149 ± 1 °C (300 ± 2 °F) | | Intake air temperature (Research Method) | 52 ± 1 °C (125 ± 2 °F) for operation at standard barometric pressure; maintained within ± 1 °C (± 2 °F) for other prevailing barometric pressure conditions | | Ignition timing (real-time displayed) | Motor Method: 26° BTDC (at CR = 5.0), adjusted automatically by the computer as CR changes
Research Method: constant 13° BTDC | | System and installation | | I/O port | USB | | Data export | LIMS, WIFI or printer | | Machine power | 12 kW | | Power supply | AC 380 V ± 10%, 50 Hz
AC 220 V ± 10%, 50 Hz | | Ambient conditions | 5 – 35 °C, 20 – 90% RH, non-condensing | | Dimensions (W × D × H) | 1700 × 760 × 1420 mm | | Weight | 1200 kg |
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