F1/F2 Octane Rating | CFR Engines

For over 90 years the F1/F2 Octane Rating Unit has been the globally recognized method for measuring a fuel's anti-knock properties, critical for optimal engine performance.

This versatile unit works with various fuels, including gasoline, additives, and alternatives. It performs both Research (RON) and Motor Octane Number (MON) methods, adhering to key international (IP) and North American (ASTM) standards.

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The CFR F1/F2 octane rating engines are specified equipment for testing fuels according to:

ASTM D2699:

Standard Test Method for Research Octane Number of Spark-Ignition Engine Fuel D2699

ASTM D2700:

Standard Test Method for Motor Octane Number of Spark-Ignition Engine Fuel

IP 237:

Determination of Knock Characteristics of Motor Fuel - Research Method

IP 236:

Determination of Knock Characteristics of Motor and Aviation Fuels - Motor Method

EN ISO 5164:

Determination of Knock Characteristics of Motor Fuels - Research Method

EN ISO 5163:

Determination of Knock Characteristics of Motor and Aviation Fuels - Motor Method

Features & Benefits

A seamlessly integrated solution for Octane testing designed for maximum efficiency and reliability.

Taking data integrity to the next level with XCP® TECHNOLOGY for trustworthy, effortless results.

Unmatched precision and eliminating human error

Unmatched precision in every test, eliminating manual adjustments and potential human error.

Flexibility with the ability to perform any of the four ASTM D2699 or D2700 test procedure

Unrivaled flexibility to perform any of the four ASTM D2699 or D2700 test procedures with ease.

F1/F2 Octane Details

Standard CFR F1/F2 System Inclusions:

Engine unit mounted to rigid base
Synchronous motor mounted to slide base (220/380/440 V; 3 Ph; 50/60 Hz)
Variable compression ratio cylinder
Compression ratio change motor
XCP panel with touchscreen PC (120V, 1 Ph, 50/60 Hz)
Electronic integrated barometer
Laser sensor for measuring cylinder height
Four-bowl "falling level" carburetor with one water-cooled bowl
Exhaust surge tank system
Water cooled exhaust manifold
Desk with keyboard and mouse

	Motor Method (ASTM D2700)	Research Method (ASTM D2699)
RPM	900 +/- 1%	600 +/- 1%
Timing	Variable based on cylinder height	13° BTDC
Water Jacket Temperature	100 °C +/- 1.5 °C (212 °F +/- 3 °F)	100 °C +/- 1.5 °C (212 °F +/- 3 °F)
Oil Temperature	57 °C +/- 8 °C (135 +/- 15 °F)	57 °C +/- 8 °C (135 +/- 15 °F)
Oil Pressure	172 kPa-207 kPa (25 psi-30 psi)	172 kPa-207 kPa (25 psi-30 psi)
Vacuum	25-150 mm H2O (1-6 in H2O)	25-150 mm H2O (1-6 in H2O)
Intake Temperature	38 °C +/- 2.8 °C (100 °F +/- 5 °F)	Barometrically Controlled Temperature +/- 4.4 °C (+/- 40 °F)
Mixture Temperature	Standard 149 °C (300 °F); Tunable	N/A

Approximately 1.58 x 1.49 x 0.96m (H x W x D), 909kg; (62 x 58.5 x 37.9 in, 2000 lbs)
Including concrete base: approximate height 1.96 m (77 in), weight 1818 kg (4000 lbs)
With exhaust surge tank: approximate depth 1.4 m (55.1 in)

Accessories & Optional Equipment

XCP® TECHNOLOGY

Taking integrated data to the next level, this advanced system automatically captures critical test data and displays information using bold graphics and ease-to-read charts, while eliminating manual adjustments and potential calculation errors.

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