CFR-A1 AUTO Fully Automatic Gasoline Octane Number Tester

CFR-A1 AUTO fully automatic gasoline octane number tester is suitable for the octane number determination of gasoline for automobiles and spark-ignition aviation engines (including motor method and research method). The test range is 40 to 120 O.N., and the knock liquid level is automatically and accurately found. No manual operation is required. The test is completed accurately, efficiently, and fully automatically with "one button", bringing users a new experience and accurate and reliable measurement results.

Applicable standards: GB/T 5487, ASTM D2699, IP 237, EN ISO 5164 GB/T 503, ASTM D2700, IP 236, EN ISO 5163

Product Features

Compliant with CFR structure engine

‒CFR standard cast iron integral cooling jacket, cylinder and cylinder head integral casting

‒CFR standard crankcase, five gears with double balance module

‒Right engine, front cranking system


Fully automatic "one-button" operation

‒Use artificial intelligence technology to achieve fully automatic test, multi-il cup test without manual intervention

‒One machine with two uses, intelligent frequency conversion technology to achieve "one-button" switching between motor method and research method

‒Automatic lifting level carburetor design , automatic oil cup switching

‒Automatically and accurately find the detonation liquid level without manual search

‒Real-time automatic monitoring of ambient air pressure, built-in atmospheric pressure automatic compensation module, air pressure compensation during the test


Stable and accurate measurement and control performance

‒Built-in octane number and compression ratio relationship curve, simple and accurate test

‒Integrated control module, real-time monitoring of various instrument conditions, with abnormal alarm prompt function

‒High-precision fuel vertical nozzle, horizontal nozzle and venturi tube to ensure accurate control of carburetor oil intake

‒ The vertical fuel nozzle and the fourth oil cup have cooling function to meet the light component oil test

‒High-power dual-circulation air conditioner (ice tower) effectively supports the intake requirements of large-bore engines

‒The main engine integrates the control of the intake ice tower and the external circulation cooling water, and provides real-time feedback on the working status

‒Precision laser displacement sensor, no delay in adjustment, accurate positioning of the cylinder height, and has limit safety protection function

‒Two-stage oil filtration and lubricating oil cooling function to ensure long-term stable operation of the equipment; the oil emulsification detection function can automatically remind users to change the oil


Perfect safety protection function

‒The instrument adopts soft start to effectively reduce noise and mechanical wear

‒The internal and external circulation cooling water of the cooling water tower has a liquid level protection function

‒With a built-in WIFI module, the equipment operation status can be remotely monitored on mobile devices, and the test is automatically reminded at the end of the test, and remote data query can also be performed

‒The light shows the working status of the instrument

‒Engine operation pressure and negative pressure sensor, real-time display of engine operation negative pressure

‒Automatically record the cumulative time of startup and test


Technical Parameters


Test Method   

Meet GB/T 5487, GB/T 503, ASTM D2699, ASTM D2700,IP 236,IP 237,EN ISO 5163,EN ISO 5164

Octane test range40~120
Cast iron cylinder diameter82.55mm(3.250inch)
Piston stroke114.30mm(4.50inch)
Cylinder capacity0.61L(37.33inch3
Compression ratio adjustment range4:1~18:1
Engine speedMotor method: 900rpm ± 9rpm

Research method: 600rpm ± 6rpm

Inlet and exhaust valve clearance (in operation and hot state)0.20mm ± 0.025mm(0.008in ± 0.001in)
Spark plug gap0.51mm ± 0.13mm(0.020in ± 0.005in)
Lubricating oil pressure172 ~ 207kPa(25psi ~ 30psi)
Lubricating oil temperature57℃ ± 8℃(135℉±15℉)
Cylinder jacket coolant temperature100℃ ± 1.5℃(212℉± 3℉)
Motor method mixture temperature149℃±1℃(300℉±2℉)
Motor method intake air temperature38℃± 2.8℃(100℉± 5℉)
Research method intake temperature52℃±1℃ (125℉± 2℉) (under standard atmospheric pressure)

Corrected with atmospheric pressure, maintained within ±1℃

Ignition advance angle (real-time display)

Motor method: 26° btdc (ε=5.0), automatically adjusted by computer according to compression ratio

Research method: 13° btdc, fixed

Communication interfaceUSB
Data OutputLIMS, WIFI or Printer
Machine power12KW
Instrument use environmentTemperature: 5~35℃; Humidity: 20~90% RH
Instrument power supplyAC380V±10%,50Hz AC220V±10%,50Hz
Dimensions1700mm wide × 760mm deep × 1420mm high
Net weight of instrument1200 KG