Engine combined frame type cylinder body and crank chamber structure

Abstract

The invention relates to an engine combined frame type cylinder body and crank chamber structure of which two cylinders are horizontally arranged opposite to each other in the technical field of automotive engineering. The structure comprises a crank baring seat, a bearing seat and cylinder body connection plate, a crank box and cylinder barrel connection circular boss, a cylinder barrel, and a cylinder barrel outer water jacket barrel; the crank bearing seat is connected with the bearing seat and cylinder body connection plate; the bearing seat and cylinder body connection plate is connected with the crank bearing seat and the crank box and cylinder barrel connection circular boss respectively; and the crank box and cylinder barrel connection circular boss is connected with the cylinder barrel and the cylinder barrel outer water jacket barrel from the center to the external respectively. The combined frame type cylinder body structure is adopted, and a water jacket cavity through which cooling water passes is formed between the cylinder barrel and the cylinder barrel outer water jacket barrel, the process complexity that a cylinder body water jacket is processed by casting in the conventional process is reduced, the whole weight of the cylinder body is reduced and production cost is greatly reduced.

Description

technical field [0001] The invention relates to an engine structure in the technical field of automobile engineering, in particular to a combined frame-type cylinder block and crankcase structure of a two-cylinder horizontally opposed engine. Background technique [0002] The cylinder block is the heart of the engine, where the fuel is ignited and burned to do work to power the engine. The crankcase is the place where the crankshaft is carried, and plays the role of connecting the cylinder block and the oil pan, supporting the crankshaft and other components. At present, the cylinder block of the traditional two-cylinder horizontally opposed engine adopts an integral structure, that is, the cylinder block and the crankcase are cast as one, which requires the production and processing of casting molds, which increases the cost of casting and increases the difficulty of casting. At the same time, there are still many parts of the integral cylinder block structure that need to...

AI Technical Summary

Problems solved by technology

In this technology, the cylinder block and the crankcase are cast as one, the casting cost is high, the follow-up processing process is complicated, the processing cost is high, the structure of the cast as one is complex, and the size and weight of the engine are large

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