Fixed Vane Turbocharger - Secondary Turbocharger

Courtesy of JAGUAR LAND ROVER NORTH AMERICA, LLC

The fixed vane turbocharger is attached to the right side exhaust manifold and is secured to three studs on a flange on the manifold with nuts. On production, no gasket is used to seal the joint between the turbocharger and the manifold. In-service vehicles will require a service gasket to be fitted if the joint between the turbocharger and the manifold is disturbed.

A second flange on the turbocharger has two integral studs and provides for the attachment of the right side exhaust system downpipe. Two nuts secure the downpipe to the flange studs and a gasket seals the joint between the downpipe and the turbocharger.

The compressor end of the turbocharger has two hose connections:

• The central connection provides the clean air supply from the air filter
• The connection on the outside of the turbocharger housing connects the turbocharger to the charge air radiator by hoses.

A Turbine intake shut-off valve (TSOV) is attached to the rear of the secondary turbocharger. The TSOV is vacuum operated and electronically controlled by the Powertrain Control Module (PCM). The TSOV is closed when the system is operating in mono-turbocharger mode, diverting exhaust gases from the right exhaust manifold, via the exhaust cross-over duct to the left exhaust manifold. When bi-turbocharger operation is required the PCM electronically operates the TSOV to allow exhaust gases from the right exhaust manifold to drive the turbine of the fixed vane turbocharger.