Engines modified with turbosuperchargers must use shrouded nozzles. If you adjust it all the way up to the high end of 21. Inspect all lines, hoses, and wire bundles for chafing, loose connections, leaks, and stains. This manual is intended for use by operators and mechanics as a guide and reference book in the operation and servicing of these engines. Operate the boost pumps only long enough to complete the purging process. This material may not be reprinted, republished, broadcast, or otherwise altered without the publisher's written permission. These inserts act as calibrated orifices and can vary in hole diameter to meet the flow requirement specified for the engine.
This means that fuel, under a given pressure, is sent to various components and finally delivered as metered pressure to the cylinder. What a fantastic improvement on what was a factory tuned engine. This book is divided into five main groups: Operating and Maintenance Instructions, Overhaul Instructions, Table of Limits, the Illustrated Part List, and Accessories. Continental Motors has not participated in design, test, or certification of any aftermarket parts. This screen serves to filter the air as it enters the nozzle body.
If using gauges, the fittings are loosened at each gauge to bleed the lines of any air. You need to stop with the procedure and flush the fuel system out to try to purge it of contaminants until you can correct the problem. Verify the accuracy of the aircraft tachometer, manifold pressure gauge, and fuel flow gauge. So they need to go back and re-check them again. By the use of an air manifold, these nozzles are vented to the injector air inlet pressure.
Adjustment If any of the actual readings are outside the specified limits, you will need to adjust the fuel system. Fuel nozzles are generally made of brass housings with either brass or stainless steel inserts. A rise greater than 50 indicates the mixture is too rich. A good spray pattern will provide maximum atomization and smooth, consistent engine operation. Do you make nozzles to fit these engines? Start the engine and allow it to warm up and stabilize. Continental Motors does not provide product manufacturing specifications to aftermarket parts manufacturers and accepts no liability for the suitability, durability , longevity, or safety of such parts installed on Continental Motors engines.
Content is subject to change without notice. This moves the valve upward until fuel can pass out through the annulus of the valve to the fuel nozzle. The continuous-flow system permits the use of a rotary vane pump which does not require timing to the engine. Regardless of the design or style of nozzle, proper operation is critical to good engine performance. Because fuel flows through the system in a continuous stream, regardless of piston position or stroke, the nozzle is placed upstream of the intake valve.
So in step 19, when you do your fuel air mixture rise, that will force you to adjust that in such a way that will slightly enrich the engine again, and gives you better part throttle enrichment. Installation of aftermarket parts on a Continental Motors engine constitutes a deviation from type- design criteria. Fuel Metering Section The fuel metering section is attached to the air metering section and contains an inlet fuel strainer, a manual mixture control valve, an idle valve, and the main metering jet. We'll let you be the judge. Both idle speed and idle mixture may be adjusted externally to meet individual engine requirements. This assures that your fuel system will be tested to the highest degree of accuracy. Fuel Discharge Nozzles The fuel discharge nozzles are of the air bleed configuration.
The boost pump is turned on and all air is bled from the test unit and hoses using the instructions on the Porta Test Unit. In other words, you should be close to 32. After all adjustments are made, go back through and re-check all readings. Fitzgerald offers an inspection tip for the fuel lines. During fuel system adjustment, idle rpm will be controlled manually using the cockpit throttle control. Tighten the lock nut, re-start the engine, operate it at 1,500 to 1,800 rpm for 15 seconds, then retard the throttle back to idle rpm. Locate the idle speed stop screw on the throttlebody and turn it counterclockwise two complete turns.
Fuel pressure, before the individual nozzles, is in direct proportion to fuel flow; therefore, a simple pressure gauge can be calibrated in fuel flow in gallons per hour and be employed as a flowmeter. How do they compare to the Continental Motors nozzles? The publisher will not be held liable for any damages caused by or alleged to be caused by use, misuse, abuse, or misinterpretation of the contents. This unit keeps metered fuel under pressure, divides fuel to the various cylinders at all engine speeds, and shuts off the individual nozzle lines when the control is placed in idle cutoff. In order to assure the finest quality control and fuel system calibration, Victor Aviation uses unique state-of-the-art computerized digital fuel flow equipment that measures fuel flow with twin - turbine electronic fuel flow meters. Available exclusively from the publis her: P. There is one nozzle for each cylinder located in the cylinder head. No other use is authorized.