What is the reason for P0234 turbocharger pressure exceeding the limit?
1 Answers
When the turbocharger pressure is too high, the turbocharger reduces the boost by opening the bypass valve to decrease the impact of exhaust flow on the driven wheel. From the understanding of the fault code, the boost pressure has not reached the control limit, which can be temporarily interpreted as "the bypass valve has never opened because the boost pressure did not meet the conditions required to open the bypass valve." Relevant information about the turbocharger is as follows: 1. Introduction: A turbocharger is essentially an air compressor that increases the intake air volume by compressing air. 2. Working principle: It uses the inertial force of the exhaust gas from the engine to drive the turbine in the turbine chamber, which in turn drives the coaxial impeller. The impeller compresses the air delivered from the air filter pipe, pressurizing it before it enters the cylinder. When the engine speed increases, the exhaust gas discharge speed and turbine speed also increase synchronously, allowing the impeller to compress more air into the cylinder. The increased air pressure and density enable the combustion of more fuel, and by adjusting the fuel quantity and engine speed accordingly, the engine's output power can be increased.
