CFR F-5 Cetane Method Diesel Fuel Rating Unit (Model no: CFR F-5)

  • Manufacturer:
  • Country of Origin:
  • Standards / test methods:
    ASTM D613, ISO 5165, GB/T 386-91
  • Applications:
    Determination of the ignition quality of diesel fuels

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Product Details

The CFR F-5 is a complete system for diesel fuel cetane number determination, conforming to ASTM D613: Standard Test Method for Cetane Number of Diesel Fuel Oil

by Cetane Method (also ISO 5165). This method is accepted worldwide as the standard for determining the ignition quality of diesel fuels.


The CFR F-5 Cetane Method Diesel Fuel Rating Unit produces test results under these operating conditions: 900rpm, 212°F jacket temperature,

135°F oil temperature, 150°F intake air temperature, and injection advance and injection delay adjusted to 13°





Variable compression cylinder head

A special cylinder head and handwheel assembly allows for continuous variation of compression ration while the unit is operating. This head is attached to a separate

cylinder for ease of maintenance. The compression ration range is 8:1 to 36:1, enabling a fuel range of diesel fuels to be tested without changing cylinder heads.



The CRF-48D crankcase combines durability with simplicity of design. All CFR engines use the same cast-iron, box-type crankcase which features removable side doors

and gear cover for easy measurement and repair of critical internal components.


Fuel Injection System

Indirect fuel injection is provided by and injector paired with a high pressure injection pump. Fuel flow rate and injection timing are completely adjustable during engine

operation via dial micrometers. Three fuel supply tanks and a special three-way valve permit convenient switching from test fuel samples to reference fuels.


Dual Digital Cetane Meter

A 115VAC digital meter (50Hz or 60Hz) measures and displays injection advance and the ignition delay of test and reference fuels in terms of crankshaft degrees.

The meter converts signals from four engine-mounted pickups into an easy-to-read display.





Safety systems provide engine shut-down when any of these conditions are experienced: electrical power loss, low oil pressure, loss of cooling water or electrical

overload of the synchronous/reluctance motor.


A fuel safety shut off solenoid prevents uncontrolled engine overspeed by stopping fuel delivery if electrical power is lost.


Jacket coolant condenser is of the thermal-syphon, ebullient, recirculating cylinder jacket type. While very simple in design it maintains constant cylinder water jacket

temperature for stable operation.


Synchronous/reluctance motor of three-phase design provides power for starting and absorbs the engine’s output to maintain constant speed during operation.


Pressure lubrication is used to lubricate all bearings and critical moving parts. External oil pump permits access to the main oil supply line for filtering, cooling or flow



Equipment Options for the CFR F-5 Unit


Variable Voltage and Cycles

50 Hz or 60 Hz models are available to suit local requirements. The synchronous/reluctance model is available in many three-phase


KVA Transformer

Converts 190, 200, 208 or 220 volts to 110 VCA (50Hz or 60 Hz).

Another option converts 240 volts to 120 VAC (50Hz or 60 Hz)


Water-cooled exhaust provides constant cooling.