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Haltech E11/E8 Instruction Manual

Turbo Wastegate Control

Description

The wastegate of a turbo is operated when the manifold pressure acting on the diaphragm within the

wastegate actuator overcomes the return spring allowing exhaust gas to bypass the turbine. With

electronic boost control, the object is to use a pulsating solenoid to bleed off the manifold pressure signal

seen by the waste gate unit so that it can see only a fraction of the manifold pressure. The solenoid

operates at constant frequency and the duty cycle is altered to control the drop in pressure signal through

the device.

Figure 108 - Turbo Wastegate Control Plumbing

Setting Wastegate control

See Auxilary outputs section for details on how to setup wastegate control.

Tuning the Wastegate map (open loop boost control)

Figure 109

Page: 107

Solenoid

Duty

Cycle

(Height)

Load

(Bars)

RPM

(Ranges)

Note: Be sure to use air hose that is rated to the expected boost pressure. All fittings

should be secured so that they will not disconnect under high pressures

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Haltech E8 Manual de usuario Pagina 107