Horizontal-type special engine crankcase

Abstract

The invention discloses a horizontal-type engine crankcase with a steering air cylinder and relates to the technical field of two-stroke engine crankcases. The horizontal-type engine crankcase comprises a crankcase body. A crankcase air inlet provided with an air inlet valve is formed in the small head side of the crankcase body; a carburetor seat mounting position is arranged at the edge of the air inlet in the small head side of the crankcase body, the central air inlet axis of a carburetor and the air cylinder axis are arranged in an anhedral mode, and the inertial air inlet direction is consistent with the crankshaft rotating direction; and the large head side of the crankcase body is provided with symmetrical crankcase scavenging ducts capable of changing the air cylinder mounting direction and an air cylinder mounting position, and four engine fixing positions are arranged at the bottoms of the front side and the rear side of the crankcase body. According to the horizontal-type engine crankcase with the steering air cylinder, the central air inlet axis of the carburetor and the air cylinder axis are arranged in the anhedral mode, so that the air inlet filling efficiency is improved advantageously, and the total height of the engine adopting the included angle design is extremely small; and an air cylinder can be mounted at a front angle and a rear angle through cooperation of the symmetrical crankcase scavenging ducts and an air cylinder scavenging duct.

Description

technical field [0001] The invention relates to the technical field of two-stroke gasoline piston engines, in particular to a crankcase of a horizontal cylinder that can be turned to the engine. Background technique [0002] Whether the engine seen in the market is a two-stroke or a four-stroke engine, the direction of intake and exhaust is at a 90-degree right angle to the axis of the crankshaft when viewed from the direction of the output shaft, and the intake port is designed on the crankcase or cylinder opposite to the exhaust port , and the exhaust port is the corresponding direction, the exhaust direction is fixed, and the direction cannot be changed, and it cannot be used on different occasions and different equipment. The direction increases the cost, and sometimes the bending pipe cannot be used to meet the requirements at all. The overall occupied space is square, which is the result that it cannot be installed or is not applicable in some special fields. It is un...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a horizontal cylinder that can turn to the crankcase of the engine, which solves the problem that the overall height of the engine is high, the space occupied is square and the volume is relatively large, the direction of the exhaust of the engine cannot be changed, and the engine enters water. The problem of not being able to quickly drain the accumulated water

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