Glossary: Engine Blocks and Cylinder Heads

A gauge that measures both pressure and vacuum using inches or a water column as a measuring unit.

The crankshaft surfaces located along the crankshaft centerline supported by the main bearing caps.

Engine control units used in major control systems, such as the engine or electrical system, that regulate the operation of multiple components or other subsystem ECUs.

Piston side thrust caused by cylinder pressure and the angle of the connecting rod during power.

A dash-mounted warning light required by OBD-II legislation to alert the driver to a potential emissions-related fault.

An advanced type of MPC system that does not use look-up tables and has a model-optimizing mechanism to correct model errors in real time.

A type of model predictive control system that generates the optimal set of control signals using virtually generated set points or predicts which set of look-up tables to use as set points.

A device that measures the weight of air entering the engine and can detect air inlet restrictions caused by a restricted air filter or intake when pressure drops below a threshold value.

Devices that measure the weight of air entering the engine and detect air inlet restrictions caused by a restricted air filter or intake when pressure drops below a threshold value.

A software-based torque control system that automatically adjusts engine torque output to match vehicle weight and load conditions. MBVT improves fuel efficiency and performance.