Engine structure of motor cycle

Abstract

The present invention relates to an engine structure of a motor cycle. The engine is arranged on the rear of a descending pipe arranged on a cycle frame. The engine comprises a crank case, a cylinder body and a cylinder head, wherein the crank case consists of a left crank case and a right crank case, a crank, a main shaft, an output shaft and an engine fuel pump are arranged in the crank case, and the crank is connected to a piston by a connecting rod; the connecting rod and the piston are arranged in the cylinder body, and the center of the crank does not penetrate through the center of the cylinder body; a cam shaft, a rocker arm, an air inlet, an air outlet and a combustion chamber are arranged on the cylinder head; the cylinder body shifts toward the rear of the cycle body, the central line of the cylinder body shifted is between the center of the crank and the center of the main shaft, and the crank rotates clockwise. Thus, part configuration space before the engine can be effectively increased, and side friction produced when the piston runs is reduced. Meanwhile, the purpose in conveniently arranging an exhaust pipe is achieved.

Description

【Technical field】 [0001] The invention relates to a motorcycle engine structure, especially to offset the cylinder body of the engine toward the rear of the vehicle body, thereby effectively increasing the space for the parts in front of the engine and reducing the lateral force generated by the piston during operation. At the same time, it achieves an engine structure that facilitates the installation of the exhaust pipe. 【Background technique】 [0002] The action of general vehicles, such as motorcycles, all-terrain vehicles, etc., is to mix the fresh air and fuel from the outside into oil and gas, and then input the oil and gas into the engine to burn and explode to generate power, and push the piston to do reciprocating motion. The crankshaft drives the belt speed change mechanism for transmission to achieve the purpose of advancing. [0003] and the vehicle's engine 1, see figure 1 As shown, a cylinder head 11, a cylinder body 12 and a crankcase 13 are included. [0...

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Problems solved by technology

[0008] And because this engine 1 is set up in a vertical manner, so the engine 1 of this vehicle will be biased towards the downcomer 2 of the vehicle frame, and then cause the front of the engine 1 to be unable to configure O2 detectors, fuel tanks or water tanks, and due to the The obstruction of the downpipe 2 also easily leads to the lack of easy installation of the exhaust pipe 14

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