Where is the waste gate located in a turbo-charged engine?

In a turbocharged engine, the waste gate is a crucial component that helps regulate the boost pressure produced by the turbocharger. The waste gate's primary function is to divert exhaust gases away from the turbine when the desired boost level is reached, effectively controlling the speed of the turbine and, consequently, the compressor.

The correct placement of the waste gate is in parallel with the turbine. When the waste gate is opened, it allows some of the exhaust flow to bypass the turbine, which prevents the turbine from spinning too fast and producing excessive boost. This configuration ensures that the turbocharger can maintain appropriate performance without risking damage from over-pressurization.

Other choices are not suitable because, for instance, placing the waste gate in the inlet manifold would not provide any control over the turbine speed. Similarly, placement downstream of the turbine would not effectively manage exhaust flow to the turbine, limiting the waste gate's ability to perform its function. Finally, placing it in parallel with the compressor would not align with the turbo's design, which aims to control the turbine's operation using exhaust gases, not the compressed air side of the system. Thus, the most effective location for a waste gate is indeed in parallel with the turbine.