At present, among the models on the market, including many models of our own brands that we are familiar with, a large part of the engines have been equipped with variable valve timing systems, although there is still a certain gap between the technical level of various manufacturers and models. But on the whole, the variable valve timing system has become a more popular technology and seems a bit used to. However, we know the so-called variable valve timing technology, whose function is mainly to change the opening and closing time of the engine valve to achieve a more reasonable control of the amount of air required for the corresponding engine speed, mainly to reduce fuel consumption and improve economy . However, the actual power performance of the engine is related to the amount of oxygen that enters the cylinder per unit time. The variable valve timing system cannot effectively change this, so it does not help much in power improvement. Since the variable valve timing system is powerless, it is now time for the protagonist of this article to introduce the variable valve lift system. Compared with variable valve timing, valve lift systems are currently relatively rare, especially continuous variable valve lift technology is only the top secret core technology in the hands of several large manufacturers, so the equipment we can buy is variable There are not many models with valve lift systems. Let's take a look at which models are available. Before reading: This article will mainly introduce the variable valve lift systems of the three major manufacturers, but due to their respective technical differences and different brand levels, the grades of models involved in this article are quite different, so we only do technical analysis and there is no comparison between the models. Please pay attention to netizens. Honda variable valve lift technology: VTEC, i-VTEC Applicable models: all Honda and Acura models on sale in China "The engines of many Honda and Acura models are equipped with VTEC or i-VTEC systems" Honda is the first manufacturer to apply variable valve lift technology to the on-board engine. It is different from other manufacturers who first use variable valve timing and then add variable valve lift technology. Honda engineers at the beginning of the research and development project These two technologies are carried out simultaneously. Simple structure and ingenious design are the characteristics of Honda's variable valve lift mechanism. The specific working method will be introduced below.
This kind is wet and dry Vacuum Cleaner. Just as its name implies,it can use not only in wet place,but also in dry place. Its function will be power. In this style,there is a vacuum cleaner that is very special,it has crevice nozzle,so it can cleanr more thoroughly. Hope you will like it,now let's see some pictures blow.
Wet&Dry Vacuum Cleaner, Industrial Wet And Dry Vacuum Cleaner, Wet Dry Vacuum Cleaner Ningbo ChinaClean Household Appliances Manufacture Co., Ltd. , https://www.chinaclean-elec.com
June 13, 2020