The structure has a fastener (24) for mounting a sensor (25) on an outer wall (11) of a crankcase (2) below an axis (3) of a crankshaft for detecting engines driving conditions. A cover unit (29) covers the sensor and extends from an outer wall of the cran...

In an example, an oil pan 8 comprises a bottom plate 26, a vertical wall 27 integrally protruded upwardly from outer edges of the bottom plate 26, an outwardly extending flange 28 formed integral with the vertical wall 27 at the protruded end and fixed to ...

The casing has a cast-iron supporting part (17) formed with a semicircular supporting recess (15) on its top surface (16) for a crankshaft to be fitted in at a lower half of its journal (4). The part is built in aluminum cross unit body. A side unit, the s...