ENGINE

摘要

An engine of the invention includes an engine main unit having cylinders, an intake line, an exhaust line, a supercharger, a turbo sensor detecting a rotational speed of the supercharger, a control device controlling, based on signal from the turbo sensor, an operating state of the engine main unit that has a correlation with the rotational speed of the supercharger, and a crank angle sensor detecting a rotation angle of a crankshaft. The control device recognizes timings at which the cylinders are in a top dead center state based on detection signals of the crank angle sensor and, also, makes a disconnection judgment for the turbo sensor at non-top dead center timings that are within one combustion cycle of the engine main unit and at which none of the plurality of cylinders are in a top dead center state.

主权项

1. An engine comprising an engine main unit having a plurality of cylinders; an intake line for guiding intake air to combustion chambers of the engine main unit; an exhaust line serving as a passage for exhaust gas discharged from the combustion chambers; a supercharger having a turbine placed in the exhaust line and a compressor placed in the intake line so as to be driven by the turbine; a turbo sensor for detecting a rotational speed of the supercharger; a control device for controlling, based on a detection signal from the turbo sensor, an operating state of the engine main unit that has a correlation with the rotational speed of the supercharger; and a crank angle sensor for detecting a rotation angle of a crankshaft,
wherein the control device recognizes timings at which the plurality of cylinders are in a top dead center state based on detection signals of the crank angle sensor and, also, makes a disconnection judgment for the turbo sensor at non-top dead center timings that are within one combustion cycle of the engine main unit and at which none of the plurality of cylinders are in a top dead center state.