Development Prospect of Diesel Engine
【Summary Description 】Bulky, noisy, black smoke, so that many people have a poor visual impression of diesel engines, after years of research and new technology applications, the status quo of modern diesel engines has been incomparable with the past. Modern diesel engines generally use electronically controlled injection, common rail, turbocharged intercooling and other technologies, and have made major breakthroughs in weight, noise, and smoke, reaching the level of gasoline engines.
Bulky, noisy, black smoke, so that many people have a poor visual impression of diesel engines, after years of research and new technology applications, the status quo of modern diesel engines has been incomparable with the past. Modern diesel engines generally use electronically controlled injection, common rail, turbocharged intercooling and other technologies, and have made major breakthroughs in weight, noise, and smoke, reaching the level of gasoline engines.
In terms of electronic control injection, the main difference between diesel engines and gasoline engines is that the electronic control injection system of gasoline engines only controls the air-fuel ratio (the ratio of gasoline to air), while the electronic control injection system of diesel engines adjusts the load by controlling the injection time. size.
In order to make the load regulation more accurate, the common rail technology was produced. Common rail technology refers to a closed-loop system composed of high-pressure oil pumps, pressure sensors and ecu. The high-pressure fuel pump delivers high-pressure fuel to the public fuel supply pipe. By accurately controlling the oil pressure in the public fuel supply pipe, the change of diesel engine fuel supply pressure with engine speed can be greatly reduced. Turbochargers for diesel engines have been described. As for the supercharged and intercooled technology, the turbocharger compresses the fresh air and cools it by the middle section cooler, and then flows to the cylinder combustion chamber through the intake manifold and intake valve. Effective intercooling technology can reduce the supercharging temperature below 50°C, which helps reduce exhaust emissions and improve fuel economy.
Since the "Eleventh Five-Year Plan", diesel engines have been continuously adjusted in industrial structure and product upgrades, and the level of enterprise optimization of resource allocation and industrial concentration have been greatly improved. In addition, the organizational structure of diesel engine enterprises has been further optimized, the pace of cross industry, cross regional and cross ownership enterprise restructuring has been accelerated, and small and medium-sized enterprises and private economy have made great progress. In terms of foreign trade exports, the number and amount of exports of major products in the diesel engine industry have increased rapidly, and the structure of export products and trade methods have been continuously optimized.
The "Forecast of Production and Marketing Demand and Analysis Report on Transformation and Upgrading of Diesel Engine Industry" released by the Prospective Industry Research Institute shows that in recent years, the total industrial output value of the diesel engine industry has increased year by year, from less than 100 billion yuan in 2007 to more than 150 billion yuan in 2010, with a compound growth rate of 19%.
According to statistics, in 2010, the number of enterprises above designated size in my country's diesel engine industry was 670, an increase of 32 over the previous year. For the whole year, the industry achieved sales of 167.638 billion billion yuan, up 35.58 percent from the same period last year; product sales profit of 21.076 billion billion yuan, up 49.31 percent from the same period last year; and total profit of 14.583 billion billion yuan, up 63.42 percent from the same period last year.
Previous Page
Next Page
Previous Page
Next Page
Description page content......
SAF Coolest v1.3.1.2 设置面板 FSWSD-ZJSD-ISZXE-ZFQ
无数据提示
Sorry, the current column is being updated, please look forward to it!
You can view other columns or returnHome Page