Exhaust gases can bypass a turbocharger (10) to reduce its speed, but energy in the gases is then lost. A brake for a turbocharger can be implemented using at least one rotor (30) driven by the turbocharger rotatable shaft (15) and at least one stator (40)...

This disclosure relates to a method and system for controlling pressure in a pressure accumulator, such as a common rail, of a fuel injection system in the event of valve failure during cranking. The method comprises the steps of monitoring the speed of th...

A passageway is provided between branches of a multi-branch exhaust manifold to reduce the amount of backflow (iEGR) into the cylinders at low engine speeds. The passage is located upstream of the turbocharger and can be at the part of the manifold where t...

An exhaust manifold (26) for a power system (10) has a first pipe section (28) with at least one inlet (32) configured to fluidly connect the first pipe section to the power system. The exhaust manifold also has a second pipe section (30) disposed adjacent...

In apparatuses and methods for controlling a fuel injector (22), a fuel shot is injected during a zero fuel condition. A rail pressure drop corresponding to the fuel shot is determined. A change in engine speed corresponding to the fuel shot is determined....

Heat transfer in coolant circuits, as in an internal combustion engine for example, can be beneficially enhanced by maintaining the coolant in a nucleate boiling state, but undesirable transitions to a film boiling state are then possible. The disclosed co...

This invention relates to the provision of an electrical connection to electrically controlled devices disposed within a cylinder head cover (28) of an internal combustion engine. Prior mechanisms for providing such electrical connections have been complex...