Method for Improving Effective Thermal Efficiency of Engine and Power Transmission Mechanism Prepared therefor

Abstract

The invention discloses a method for improving the effective thermal efficiency of an engine and a power transmitting mechanism prepared through the method. The method comprises the steps that an eccentric distance of the engine power transmission mechanism is set, the eccentric distance is the distance between the axes of bent axles and the axes of the connecting ends between a piston rod and crank connecting rods; the connecting ends between the piston rod and the crank connecting rods are located above the center points of the bent axles, or the eccentric distance is the distance between the axes of the bent axles and the axes of the connecting ends between a pin roll on a round sliding block and the crank connecting rods, or the eccentric distance is the distance between the axes of the bent axles and the axes of the connecting ends between the piston rod and the crank connecting rods. The method for improving the effective thermal efficiency of the engine and the power transmitting mechanism prepared through the method are great in power increasing range, save engine oil and are low in exhaust contaminant; the power is high and the torque is large; working stroke is shortened,the improvement of the combustion and compression ratios is facilitated, and the heat loss is reduced; the parts are fewer and the production cost is low; the length of the connecting rods can be reduced to enable the whole mechanism to be compact; when the bent axles are rotated in a negative offset mode, the bent axles splash lubricating oil all the way to the piston, a piston cylinder body iswell lubricated, the engine oil has high heat dissipation to the piston, and the engine has high working strength and long service life.

Description

technical field [0001] The invention relates to an engine, and relates to a method for improving the effective thermal efficiency of the engine and a power transmission mechanism prepared therefor. Background technique [0002] Various engine power transmission mechanisms that have been disclosed at present all convert the reciprocating motion of the piston into rotary motion through the crank-connecting rod mechanism and the crankshaft, and the crankshaft is driven by the piston-connecting rod to perform work. Among these structures, there are single-crankshaft and double-crankshaft structures, and specifically, non-biased and biased structures. Although the engine power transmission mechanisms of these structures have their own advantages, their shortcomings still exist. For example, there are alternating side pressures between the piston and the cylinder wall of the unbiased engine of the single crankshaft structure, which affects the friction between the piston and the c...

AI Technical Summary

Problems solved by technology

Although the engine power transmission mechanisms of these structures have their own advantages, their shortcomings still exist. For example, there are alternating side pressures between the piston and the cylinder wall of the unbiased engine of the single crankshaft structure, which affects the friction between the piston and the cylinder liner. Power consumption, statistics show that this kind of friction power consumption accounts for about 75% of the mechanical loss of the engine, and the friction power consumption of the cylinder liner and piston ring accounts for 50% of the piston connecting rod system. Therefore, in order to reduce the pressure on the side of the piston, the crankshaft is usually used However, it can be seen from the disclosed technical solutions that the offset crankshaft structure can generally eliminate the side pressure of the engine piston and cylinder wall, reduce friction and vibration, because those skilled in the art believe that the power stroke is when the crankshaft rotates The greater the proportion of the angle, the more work is done, so the crankshaft-connecting-rod mechanism only rotates in the direction of positive bias to do work

However, these engine power transmission mechanisms arranged in a positive bias manner have a small increase in the effective thermal efficiency of the engine

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