Jingzhou Chuangbo Instrument Manufacturing Co., Ltd. boasts many years of experience in the research, development, and manufacture of gasoline octane‑rating instruments. Our range of models has been widely adopted by numerous customers. The JCB54787-02 fully automatic gasoline octane‑rating tester is a state‑of‑the‑art, fully automated instrument developed in accordance with ASTM standards. It is designed to measure the anti‑knock performance of gasoline for automotive and spark‑ignition aircraft engines, fully complying with ASTM D2699 and ASTM D2700 (while also meeting the latest requirements of GB/T 5487 and GB/T 503). The instrument’s octane‑rating test range spans from 40 to 120.
Functional Features
 Complies with ASTM D2699 (Research Method) and ASTM D2700 (Motor Method) standards (covering the latest GB/T 503 and GB/T 5487); enables rapid switching between motor‑method and research‑method operating conditions, with simple and user‑friendly operation.
 Equipped with a specially developed CFR integral gasoline engine that complies with CFR standards, featuring fully integrated lubrication lines for maintenance-free operation;
 Fully automatic operation: once the parameters are set, a single button press initiates the automated oil evaluation, delivering the test results (with printout capability), while also supporting high-precision compression‑ratio‑based oil assessment.
 The engine features an integral cooling jacket design, ensuring stable mechanical performance.
 Four oil storage tanks are configured, one of which is equipped with a cooling jacket and an electrically controlled rotary switching valve (☺);
 Employs laser-based non-contact measurement of the compression ratio (☺), unaffected by temperature;
 The knock sensor is designed in accordance with industrial standards, and its specially engineered signal transmitter (☺) ensures interchangeability among knock sensors.
 Equipped with a professional knock sensor, it adjusts the knock signal according to standard requirements, provides a calibrated display of knock intensity across the full measurement range, and meets the specified broadening and standard knock intensity levels during oil evaluation (☺);
 Precision rotary encoder technology is employed to achieve accurate ignition control, with ignition timing adjustment requiring no mechanical adjustments (☺);
 Automatically detects ambient atmospheric pressure, enabling real-time automatic compensation during testing (☺), and features a built-in correlation curve between octane rating and compression ratio. Test results can be printed via the panel-mounted printer and the system supports integration with LIMS.
 The large-capacity air-conditioning unit is equipped with a two-stage temperature-control system, delivering dust-free, dry, and thermostatically stable gas that meets relevant standards.
 Configure the lubricating oil preheating module, with a preheating time limited to within 30 minutes; the lubricating oil is filtered in two stages—coarse and fine.
 Equipped with a low-power, high-efficiency recirculating cooling system; the system’s power consumption is less than 0.4 kW and requires no maintenance (☺);
 The entire machine features a structured design, and its control system employs a modular controller, which not only enhances reliability but also makes routine maintenance, servicing, and troubleshooting simple and convenient.
 Equipped with an adjustable touch-screen control panel, the application software features a highly integrated ON‑mode user interface, providing clear, real-time status monitoring at a glance. The operation buttons are designed to guide users through test procedures, offering an aesthetically pleasing and easy‑to‑learn interface (☺);
 Displays the 100‑second knock intensity trend curve in real time; provides timely and clear software prompts; automatically records the power‑on time and cumulative operating hours; and issues automatic maintenance reminders.
▲5.1 The software’s main interface shall feature clearly visible functional areas and operating‑condition parameters, organized into at least three major sections: (a) sections for method standards, engine operating conditions, and peripheral operating conditions; (b) a status‑display section showing the maximum knock signal, knock waveform, temperature curve, event log, test information, and other relevant data; and (c) a guided‑operation section providing controls for intake‑air heating, lubricant‑oil heating, mixer heating, ignition, recording knock readings of the test sample, and recording knock readings of the reference standard. Supporting materials, such as screenshots of the software interface, shall be provided.
▲5.2 The software’s widening interface must support both manual and automatic widening modes, with real-time display of parameters including instrument readings, widening coefficient, time constant, knock signal, knock reading, and digital meter zeroing (supporting documentation, such as screenshots of the software interface, shall be provided).
▲5.3 The software’s method‑file interface must include several standard methods, such as: A) equilibrium‑surface interpolation; B) dynamic‑surface interpolation; C) compression‑ratio method; D) automatic dynamic‑surface interpolation; research‑based method; motor‑based method, etc. (Supporting materials, including screenshots of the software interface, shall be provided.)
▲5.4 To ensure accurate recording of maintenance schedules and status, the statistics interface must display information such as the current startup time, cumulative startup time, the current ignition time, and cumulative ignition time, with precision down to the second (supporting documentation, including software interface screenshots, shall be provided).
5.5 The instrument is equipped with the Windows operating system, and the dedicated application software for the gasoline octane rating tester features a menu bar and toolbar containing the following touch‑controlled buttons: File, Tools, Options, Language, Help, Method, Start, Stop, Compression Ratio, Valve Assembly, Record, Shutdown, and others.
5.6 The software operating‑condition interface shall display green flowing text under normal conditions—e.g., “System is functioning properly”—and red flowing text under abnormal conditions—e.g., “Water pressure abnormal”—as an alert.
5.7 The software interface shall support the following major operating modes: Motor‑method standard plus interpolation mode, Motor‑method standard plus compression‑ratio mode, Research‑method standard plus interpolation mode, and Research‑method standard plus compression‑ratio mode, among others.
5.8 The ignition calibration interface shall provide the following operational functions: (a) start the main motor for 10 seconds; (b) stop the main motor; (c) rotate the flywheel to top dead center; (d) click the “Zero Point” button to complete the procedure; (e) display real-time data such as the ignition angle correction value (with supporting materials, including screenshots of the software interface).
5.9 The compression ratio adjustment interface shall include the following functions: warnings (do not use low‑octane fuel at excessively high compression ratios), current compression ratio, target compression ratio, knock signal, micro‑adjustment plus, increase compression ratio, decrease compression ratio, stop, and return, among other status indicators.
5.10 The test record interface must include all essential test information, with a toolbar providing functions such as Print, Thermal Print, Export, Edit, Previous, Next, Delete, Table of Contents, LIMS, and Return. The main test record page shall display the following details: file name, sample source, sample number, sample description, method standard, test method, atmospheric pressure, test date, start time, duration, end time, actual values of operating condition parameters, set values, allowable deviations, knock‑detection readings for reference and test oils, compression ratio correction factor, octane rating, operator, and other relevant information.
▲5.11 To ensure safety and prevent operational oversight, a shutdown‑confirmation dialog must appear prior to powering down. The prompt may include, but is not limited to: (a) after shutdown, turn the key switch to disconnect the power; (b) open the drain valve and transfer any remaining fuel into the waste‑oil container; (c) drain the cooling water; (d) rotate the flywheel to the top dead center position; and (e) perform thorough cleaning of the instrument’s exterior, among other tasks. Supporting documentation, such as screenshots of the software interface, shall be provided.
5.12 The digital knock meter interface shall provide the following parameter functions: manual width adjustment, automatic width adjustment, instrument reading, width coefficient, time constant, knock signal, knock reading, digital instrument reading reset, and manual activation, among others.
5.13 Software Operation Procedures: The software interface must include the following functions: Standard Method A—Interpolation (Equilibrium Liquid‑Level Method); Standard Method B—Interpolation (Dynamic Liquid‑Level Method); Standard Method C—Compression Ratio Method; Standard Method D1—Automatic Interpolation (Dynamic Liquid Level); Standard Method D2—Automatic Interpolation (Half‑Dynamic Liquid Level); Test Dynamic Method; Research Method; Motor Method, and other related functions (with supporting materials such as screenshots of the software interface).
★5.14 enables remote control of the instrument via a mobile app or software, supporting functions such as remote experiment continuation and remote monitoring. In case of abnormalities, the system automatically shuts down upon mobile command, and features like one‑click switching between the motor method and the research method are also available.