Applicable Standards:

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

Product Features

• The instrument main body is a standard single-cylinder, four-stroke engine with continuously variable compression ratio. The adjustable compression ratio ranges from 4:1 to 18:1.
• It adopts CFR-standard cast iron integral cooling jacket. The cylinder and cylinder head are integrally cast to improve thermal balance efficiency, and strictly conform to the standard required correlation curve between cylinder height and octane number.
• The CFR-standard crankcase features heavy-duty cast box-type design, fitted with heavy-duty 3-inch main crankcase and bearings, five high-strength load-bearing gears and two sets of balance modules. It possesses sufficient strength and rigidity to withstand loads generated by various fuels.
• Right-mounted engine with front cranking system.
• Equipped with a six-cup drop-level carburetor with drop-type horizontal program, featuring automatic cup switching. Six independent horizontal nozzles and one-way vertical nozzles precisely control the fuel-air ratio.
• The design, manufacture and inspection of major mechanical parts such as integrated cylinder, holder, piston and carburetor assembly strictly comply with international standards.
• The repeatability and reproducibility of test results fully satisfy standard requirements.

Advanced and Forward-looking Design Concept

• The instrument adopts iSKvator™ technology. It is easy to operate, automatically completes tests via intelligent judgment, supports automatic cup switching, and can automatically and accurately locate the maximum knock liquid level. It simplifies fuel test procedures and reduces errors resulting from operator mistakes.
• One machine for two applications. Intelligent variable frequency technology enables one-click switching between the Motor Method and Research Method.
• Innovative 6-cup automatic sample cup and carburetor system saves reference fuel consumption and effectively improves test efficiency. The vertical fuel nozzle and the sixth sample cup are equipped with refrigeration function to satisfy tests for light-component fuels.
• Adopts push-pull transverse nozzle design. No nozzle replacement is needed when switching test methods, delivering convenient and efficient operation.
• The instrument uses soft start to effectively reduce noise and mechanical wear.
• Automatic cranking; the unit automatically resets to top dead center (TDC) after test completion for simple, accurate and efficient operation.
• Auxiliary lube oil heating system effectively shortens warm-up time.
• Two-stage lube oil filtration and lubricating oil cooling function ensure stable long-term equipment operation. The lube oil emulsification detection function can automatically remind users to replace lubricating oil.
• Features a brand-new appearance and standardized integrated support base design for easy installation and stable operation.
• Built-in Wi-Fi enables remote operation and equipment status monitoring on mobile devices. Automatic alerts will be sent once tests finish, and remote data query is supported.
• Test data is automatically collected and presented as Excel reports, including ambient data (temperature, pressure, etc.), KI, O.N., comparison of KI and fuel level curves, etc.
• Test data can be exported to the user’s LIMS system.

Stable and Precise Measurement & Control Performance

• Built-in correlation curve between octane number and compression ratio for simple and accurate tests.
• Precision laser displacement sensor enables zero-delay adjustment and accurate positioning of cylinder height, with limit safety protection.
• High-precision vertical fuel nozzles, horizontal fuel nozzles and venturi tubes ensure precise control of carburetor fuel feed.
• High-precision knock sensor delivers millisecond-level response. Together with the fully automatic digital knock meter, it automatically records data and calculates results. It effectively removes knock intensity limits and bandwidth settings of traditional knock meters, shortens test duration and reduces data deviations caused by human factors.
• Real-time automatic monitoring of ambient barometric pressure. A built-in automatic barometric pressure compensation module performs pressure compensation throughout the test.
• Equipped with an exhaust buffer system to effectively eliminate resonance and backpressure in the exhaust pipeline during operation, achieving stable and accurate octane number measurement.
• The main unit integrates control of the intake ice tower and external circulating cooling water, with real-time feedback of operating status.
• High-power dual-circulation air conditioner (ice tower) reliably meets the intake air requirements of large-bore engines.

Excellent Safety and Environmental Performance

• The whole machine adopts industrialized and modular design for easy maintenance, keeping the equipment in optimal operating condition over a long period.
• The control system uses an advanced embedded control module plus high-performance industrial computer architecture. Core components are readily interchangeable to shorten fault location and repair time and substantially cut spare parts costs.
• Automatically records instrument operating hours and triggers reminders in accordance with maintenance requirements to ensure normal and stable equipment operation.
• Real-time monitoring of all operating parameters, with remote monitoring via Wi-Fi and abnormal alarm alerts.
• Multiple protection functions including cylinder limit protection, engine overspeed protection, cooling tower level protection and emergency stop button, providing comprehensive safety protection for equipment and operators.
• The engine is fitted with a silencer to effectively reduce noise pollution.
• A specially installed exhaust purification device monitors harmful substances including CO, NO, SO₂ and PM2.5 in exhaust gas in real time to satisfy environmental exhaust emission requirements.
• Removable side covers facilitate inspection, servicing and maintenance of key internal components.
• Interference-fit crankcase structure and robust hardware configuration effectively extend equipment service life and reduce maintenance costs.