CONSTRUCTION
A lightweight and high-strength aluminum die-cast stiffening crankcase assembly is used. This assembly is integrated with the cylinder block sub-assembly, thus improving the rigidity of the join with the transaxle, and reducing vibration and noise transmitted to the interior of the vehicle cabin.
Oil drain passages are provided in the stiffening crankcase assembly. This prevents the crankshaft from churning the engine oil, reducing rotational resistance.
The high pressure oil passage, rear oil seal retainer, oil filter bracket and rear end plate are integrated with the stiffening crankcase assembly, thus reducing weight of the engine and making it compact.
The oil pressure control valve assembly for the variable oil pump is installed to the stiffening crankcase assembly, achieving a simpler lubrication circuit.
| *1 | Stiffening Crankcase Assembly | *2 | No. 2 Oil Pan Sub-assembly |
| *a | Oil Passage | *b | Oil Drain Passage |
| *c | Oil Pressure Control Valve Assembly Hole for the Variable Oil Pump | *d | Rear Oil Seal Retainer |
| *e | Rear End Plate | *f | Oil Filter Bracket |