Lubricating system of four-stroke engine and tool equipment with four-stroke engine

Abstract

The invention discloses a lubricating system of a four-stroke engine. The lubricating system comprises a crankcase, a lubricating oil tank and a cam chamber, the crankcase is provided with a crank chamber, the lubricating oil tank is positioned outside the crankcase, and the cam chamber is used for storage of a cam. A lubricating oil chamber for storage of lubricating oil is formed between the lubricating oil tank and the crankcase. The crankcase is provided with front oil taking holes in communication with the crank chamber and the lubricating oil chamber, and an oil pipe is connected betweenthe cam chamber and the lubricating oil chamber. By communication between the cam chamber and the lubricating oil chamber through the oil pipe, in operation of the four-stroke engine, vertical movement of a cylinder piston enables lubricating oil to enter the cam chamber through the oil pipe without passing through the crank chamber, and sufficient lubricating oil can enter the cam chamber to timely lubricate structures of the cam and the like to prevent abrasion. The invention further provides tool equipment with the four-stroke engine. The tool equipment comprises the four-stroke engine which adopts the lubricating system.

Description

technical field [0001] The invention belongs to the field of engines, and in particular relates to a lubricating system for a four-stroke engine. Background technique [0002] Four-stroke engines are widely used in various movable products, such as garden tools. The interior of this four-stroke engine includes an oil-air lubrication system, which generally includes a crankcase forming a crank chamber, holding lubricating oil The lubricating oil chamber, the cylinder chamber and the cam chamber of the crankcase are provided with a pre-stage oil intake hole connecting the crank chamber and the lubricating oil chamber. At present, the lubricating oil in the lubricating oil chamber of the existing four-stroke engine must pass through the front The stage oil hole enters the crank chamber, and then enters the cam chamber through the crank chamber, so as to realize the function of lubricating the mechanical parts. [0003] However, during the use of the four-stroke engine, the cra...

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Problems solved by technology

[0003] However, during the use of the four-stroke engine, the crank chamber consumes a large amount of lubricating oil entering the crank chamber, so that the amount of lubricating oil entering the cam chamber is less, and the lubricating effect on the cam is poor, which ultimately affects the lubricating effect of the four-stroke engine and reduces engine life

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