US 11,181,019 B2 · Internal combustion engine

Abstract

An internal combustion engine includes a crankshaft that is rotatably supported on the crankcase, a cylinder block that is joined to the crankcase and defines a plurality of cylinders in a V-type arrangement in which the cylinders are disposed above a virtual horizontal plane including a rotational axis of the crankshaft and intersect each other at a bank angle, a to-be-detected body that rotates integrally with the crankshaft, and a detection sensor that is mounted from an outside at a position, lower than the virtual horizontal plane, of a front face of the crankcase that receives air flow, is made to face a trajectory of the to-be-detected body, and generates a pulse signal in response to movement of the to-be-detected body. Thereby provided is a structure for disposing a detection sensor that can detect the angular velocity of a crankshaft with high precision in a so-called V-type internal combustion engine.

Claims12

Dependent claims

An internal combustion engine comprising:

a crankcase that defines a crank chamber;
a crankshaft that is rotatably supported on the crankcase;
a cylinder block that is joined to the crankcase and defines a plurality of cylinders in a V-type arrangement in which the cylinders are disposed above a virtual horizontal plane including a rotational axis of the crankshaft and intersect each other at a bank angle;
a to-be-detected body that rotates integrally with the crankshaft;
a detection sensor that is mounted from an outside at a position, lower than the virtual horizontal plane, of a front face of the crankcase that receives air flow, is made to face a trajectory of the to-be-detected body, and generates a pulse signal in response to movement of the to-be-detected body;
an oil cooler mounted on an outer face of the crankcase beneath the detection sensor;
and
an exhaust pipe that has a curved portion formed to curve while bypassing the oil cooler, the curved portion of the exhaust pipe at least partially overlapping the detection sensor when viewed from a front of the engine.

5 more elements

Dependencies are inferred from the claim text.

Internal combustion engine

Life of this patent

Internal combustion engine

Life of this patent

Abstract

Claims12