Cylinder Head Flow Bench

Cylinder Head Flow Bench

Group 10: Alexendro Walsh, Andrew Howard, Andrew Masters,

Justin Vasquez, Noah Young

Spring 2022

Mechanical Engineering Senior Project: ME 190

Problem Statement

Most flow benches use barometers or mechanical gauges that are only able to give information for current conditions and are not able to have a corrected factor for different

locations or climate conditions. Measuring off barometers and mechanical gauges also makes it difficult visualize the real-time effects of changing the valve height on a cylinder

head.

This flow bench must be accurate to read 0.01 psi pressure drop across the cylinder head as well as give live data showing the flow rate based on local air temperature,

humidity, and atmospheric pressure.

Function/Constraints

Background

aasd

SF-600 SuperFlow Flowbench

Analysis

Design

¡ñMaximum 500 CFM

¡ñTable top supports at most (60) lbs

¡ñRealtime graph with CFM vs. Valve lift

¡ñAccurate to within 0.01 psi pressure differential (Typical Range of

3.61 psi to 0.52 psi)

¡ñ5 volt sensor data analyzed through an arduino (Mass Air-flow, Air

Temp/Density, Pressure)

¡ñVariable fan speed controller

¡ñCompatible with different sized cylinder heads using adaptor plates

6¡¯ diameter PVC piping provides optimum flow

for the desired CFM. The routing will exhaust to

the rear.

Turbulent flow at the inlet turn will be corrected

with a flow straightener to provide accurate

sensor readings along the straight section.

The centrifugal fan model 1953k27 was the clear choice

based on the efficiency of the air flow, RPM, CFM, and

max static pressure when compared to other centrifugal

and axial fans. Most important factor that guided the

decision was the max static pressure, with our desired

300 CFM which was 3 in. When using the fan law

equations and HP, RPM, and CFM equations for

centrifugal fans to compare the actual fans outputs to

the listed literature values

Valve Spring Compressor

used for measuring valve

lift.

Reaction forces on fan support bracket.

Defection and momentum flow equations:

Force and Moment Equations

F = -k*(x)

(Spring Force)

P = T/(K*D) (Clamping Force)

T = F (r)

(Torque)

Testing

Testing will be done on a 13¡¯ Triumph

Bonneville T100 Cylinder Head. The

valve lift will be measured using the

valve compressor with a digital caliper

fixed to it..

Bench top can be used as a work bench when

the flow bench is not in use.

The pressure drop and flow will be

compared to calculated values.

4-Valve Triumph

Cylinder Head

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