[ownerof2011cruze]

Hello fellow Cruze owners

Under what conditions does the 1.4L engine initiate and use turbocharger boost? In a properly functioning engine, when is boost mode activated?

Thanks in advance.

Best Good

 

[ownerof2011cruze]

Further to my earlier question, the waste-gate actuator is operated by inlet air pressure I think. The pic of my Honeywell Turbo after unboxing shows the actuator. The spring holding the actuator rod inward and thus waste-gate closed is pretty stiff, so there would have to be some pressure above which the actuator diaphragm pushes to rod outwards and opens the waste-gate to stop boosting at high (I guess near red-line) RPM, so I reason (probably incorrectly). At what RPM with WOT does that happen, if it happens at all?

(Note: I saw a video the other day where an engineer guy was saying that in a turbo equipped vehicle one should not put the hammer down and go wide open throttle until after the engine is at warm operating temperature. In a G1 LT with a 217° thermostat, that would be 217°F. )
https://www.cruzetalk.com/forum/mem...ell-turbocharger-picture266687-0909181207.jpg