Novel high-pressure-resistant sealing system for automobile engine and manufacture method thereof

Abstract

The invention relates to a novel high-pressure-resistant sealing system for an automobile engine and a manufacture method thereof. The manufacture method includes: step 1, improving definite elongation of rubber, adjusting proportion of raw materials of the rubber, adjusting a reinforcement system and improving definite elongation of the rubber so as to improve pressure resistance of the rubber by specifically increasing 3-4 parts by weight of white carbon black and reducing1-2 parts by weight of carbon black; and step 2, improving hardness of the rubber and increasing abrasion resistance of the rubber by increasing 30-40 parts by weight of wollastonite. The novel high-pressure-resistant sealing system has the advantages of being stable in size, oil resistant and anti-aging in engine oil, being low in friction factor, slow in temperature rise in unit time and abrasion resistant in valve guide rod reciprocating motion, enabling medium and high pressure resistance of a turbine to be increased, being capable of using environment-friendly adhesive for bonding, reducing pollution on environment, shortening vulcanizing time of an oil seal, saving energy, ensuring sealing reliability, prolonging service life of the oil seal and the like.

Description

technical field [0001] The invention relates to the field of sealing systems for automobile engines, in particular to a method for preparing a rubber skeleton oil seal rubber material for an engine used in a high-temperature state and high-speed reciprocating environment. Background technique [0002] With the rapid increase of automobile sales year by year, people's requirements for automobile speed are greatly improved, and ordinary engines can no longer satisfy people's pursuit of speed. In order to increase the speed of the car, most of the current car manufacturing field is to increase the intake air volume of the engine by supercharging the engine turbo, thereby increasing the power and torque of the engine and making the car more horsepower. As the pressure of the oil and gas in the piston cylinder increases, the ordinary engine sealing system is not resistant to high pressure and causes air leakage, so that the gasoline in the engine is fully combusted due to insuffi...

AI Technical Summary

Problems solved by technology

As the pressure of the oil and gas in the piston cylinder increases, the ordinary engine sealing system is not resistant to high pressure and causes air leakage, so that the gasoline in the engine is fully combusted due to insufficient pressure, or the lubricating oil on the valve guide rod is damaged due to the increase of oil and gas pressure The valve cannot be opened and closed normally due to being blown away by high-pressure oil and gas, resulting in a decrease in the pressure of oil and gas in the piston cylinder, so that the gasoline in the engine is fully burned due to insufficient pressure, and the valve cannot be opened and closed normally due to insufficient lubrication, resulting in severe engine wear and damage , so the sealing system for ordinary engines is no longer applicable to the normal use of cars that are waiting for work

[0003] In addition, in order to control the air pollution caused by automobile exhaust, many countries have proposed automobile exhaust emission standards, and with the deepening understanding of the climate, the exhaust emission standards will become more and more strict. The sealing system can no longer meet the requirements of modern technology, so an environment-friendly, high and low temperature resistant, high wear-resistant, high pressure-resistant, energy-saving engine valve guide rubber skeleton oil seal came into being