Unlock Precision and Reliability with the CFR® F1/F2 Octane Rating Unit

Unlock Precision and Reliability with the CFR® F1/F2 Octane Rating Unit

When it comes to assessing the anti-knock characteristics of motor fuels, the CFR® F1/F2 Octane Rating Unit is the undisputed global standard. Whether it’s gasoline, fuel constituents, or alternative fuels, this state-of-the-art system has been at the forefront of establishing test methods for rating fuels since the inception of the first CFR octane rating engines in 1929. Collaborating closely with the automotive and petroleum industries, we continuously refine the CFR product line to empower fuel producers and engine manufacturers in creating products that perform harmoniously.

Specified Equipment for Fuel Testing

The CFR F1/F2 octane rating engines are the specified equipment for testing fuels according to ASTM D2699 (Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel), ASTM D2700 (Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel), IP 236 (Determination of Knock Characteristics of Motor and Aviation Fuels – Motor Method), and IP 237 (Determination of Knock Characteristics of Motor Fuel – Research Method).

Confidence in a Fully Integrated Fuel Testing System

A comprehensive CFR Engines Inc. octane fuel testing system comprises four main elements, each meticulously designed to seamlessly integrate and deliver dependable results. With the Engine Air Control System, the F1/F2 octane rating engine, XCP™ Technology, and a CFR® exhaust surge tank, each critical parameter of a successful octane test is expertly controlled. Whether you’re using a complete unit, an upgrade/conversion kit, or a genuine CFR service part, rest assured that the product has been meticulously crafted and rigorously tested to function as an integrated solution for your operations. Trust in the CFR octane rating system to perform its task, allowing you to focus on your other priorities.

Data Integrity with XCP Technology

With the XCP Digital Control Panel, critical information for each rating is automatically captured and presented in an Excel-based report, eliminating manual data recording and calculation errors. The standard XCP report includes KI values, Octane Numbers, environmental data (temperatures, pressures, barometer, and EACS humidity), and KI vs. fuel level curves. The XCP can also seamlessly integrate into a Laboratory Information Management System (LIMS), providing automatic capture and processing of test data to ensure unassailable ratings.

Reliability of Proven Design

For nearly a century, thousands of users have relied on the proven service of CFR Engines Inc. products. This reliability has been consistently maintained through a series of well-designed system upgrades and product enhancements. CFR octane and cetane testing systems and components, including the robust engine crankcase and cylinder/head, are built to deliver unmatched operating life. With basic maintenance and upkeep, CFR octane rating engines can consistently meet the demands of today’s fuel testing environment with a true engine-based Octane Number.

Precision through Modern Instrument Control

The CFR F1/F2 Octane Rating Unit with XCP Technology leverages digital instrumentation to record and process critical aspects of system operation and performance. On-board barometric pressure adjustments, increased automation, a broad octane meter range, no need for adjustments due to “spread,” and control of engine intake air are just a few of the advantages of the CFR fully integrated instrument system. More accurate measurements, controlled by an intuitive interface, result in superior precision.

Cost Savings with One System Flexibility

With standard product offerings, a CFR F1/F2 Octane Rating System offers unmatched flexibility and cost savings. Users can easily switch between any of the four test procedures in ASTM Methods D2699 or D2700 with a few simple component changes and the push of a button. This leads to cost savings by optimizing resource utilization, expediting test changes, reducing operator training, and enhancing repeatability, all with a single system.

Additional Features That Set CFR Apart

XCP integrated safety monitoring system and shutdown protections for power loss, low oil pressure, overheating, and electrical overload.

An easy-to-use touch-screen HMI panel for unit operation and octane rating tests.

Built-in prompts to guide operators through the test procedures for all ASTM methods, improving consistency between operators.

A simple design of the thermal siphon, ebullient, recirculating-type cooling condenser that maintains a constant cylinder jacket water temperature for stable operation.

Intuitive and user-friendly XCP Technology, requiring less training for operators to achieve proficiency in octane and cetane testing.

A digital knock meter that displays the actual knock intensity value, eliminating the need for visual interpretation of an analog meter.

An electronic maintenance log that documents vital maintenance information for future reference.

A non-contact laser sensor that accurately measures cylinder height and displays results on-screen, providing more accurate test results.

A synchronous/reluctance motor that provides power for starting and absorbs engine output to maintain constant speed.

An electronic on-board barometer that automatically corrects cylinder height for barometric pressure.

Environmentally friendly resistance temperature devices (RTDs) for managing critical temperature variables.

A built-in diagnostic feature that provides a way to troubleshoot the octane rating unit when maintenance is needed.

On-screen operations and maintenance manuals for easy access.

Experience the pinnacle of precision, reliability, and flexibility with the CFR® F1/F2 Octane Rating Unit.


In conclusion, the CFR® F1/F2 Octane Rating Unit stands as the beacon of precision and reliability in the world of fuel testing. With its rich history dating back to 1929, it has continually evolved and adapted to meet the ever-changing needs of the automotive and petroleum industries. The fully integrated system, powered by XCP Technology, ensures that every octane test is executed flawlessly, providing accurate and consistent results.

Not only does the CFR system deliver unparalleled precision, but it also offers cost savings through its one-system flexibility. Users can seamlessly switch between various test procedures, streamlining operations, reducing training time, and enhancing repeatability, all with a single system.

The additional features, including integrated safety measures, user-friendly interfaces, and automated data capture, further solidify CFR’s position as the industry leader. With a commitment to reliability and a design built for longevity, CFR Engines Inc. products have consistently withstood the test of time.

In a world where accuracy and efficiency are paramount, the CFR F1/F2 Octane Rating Unit with XCP Technology is your ultimate partner in fuel testing. Whether you’re a fuel producer or an engine manufacturer, this system empowers you to create high-performance products that meet the demands of today’s dynamic landscape. Trust in CFR to ensure your fuels meet the highest standards, allowing you to focus on what truly matters – driving innovation and excellence in the industry.

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