Innovation has always been accompanied by questions and challenges, and the pace of innovation has always been the choice of wise men and wisdom. Demand has spawned people's reverie about the infinite science and technology, and when the technology of Yongli Chaotou is controversial by the world, it is believed that time will give wise people the most intelligent answers and choices.
ISG Power is Cummins' latest generation of heavy-duty engine platform. It adopts an innovative three-valve (two-in-one) gas distribution mechanism designed to meet the needs of Chinese users for low-speed and high-torque (1000-1400 common rotation speeds), using large bore diameters and more. The large intake valve design combines the XPI Ultra High Pressure Injection System developed in conjunction with Scania and Cummins Holset Turbo Technology to achieve true “two highs and one lowâ€: (low speed) high torque, high reliability Sex and low fuel consumption.
Cummins ISG Engine
The realization of the ISG's low-speed and high-speed torque first benefits from the breakthrough large bore diameter and the revolutionary "three-valve" design. "The design of the three valves can optimize the airflow in the combustion chamber." This theory has always existed in the research of engine pilot technology. Many engine manufacturers, such as Daimler-Benz, have also developed a three-valve engine. However, due to the choice of injectors and other structural constraints, no engine company can achieve the desired advantages. With the development of ultra-high pressure fuel injection technology and turbocharging technology, Cummins has fully utilized the five key system integration capabilities of diesel engines, turning the theory into reality and realizing the advantages of ISG's low speed and high torque! The realization of the technical advantages of the three valves is a diesel engine. The major breakthrough in design technology has changed the design philosophy and awareness of traditional diesel engines.
The three-valve design, with two inlets and one row, gives the inlet valve a larger design space, making the inlet valve area larger than the four-valve inlet valve design, and optimizing the inlet port design in the cylinder head. Provide more space, so that the intake air is more than four valves, better atomization; with the large bore design, give full play to the energy of each drop of diesel, achieve low speed and high torque, and bring excellent adaptability to the plateau , The highest adaptability up to 5,089 meters above sea level, much higher than most products on the market. At the same time, due to sufficient combustion, lower fuel consumption, less soot, and less pollution to the oil, it contributes to long-term maintenance. A single oversized exhaust valve reduces turbulence disturbances in the exhaust, and also reduces the heating of the cylinder head by the exhaust (the exhaust passage area is greatly reduced), making the exhaust gas more efficient at low speeds, and increasing the turbocharger speed. Gas efficiency is more conducive to the advantages of ISG's low speed and high torque.
Integrated inlet with cylinder head 
Cummins's prestigious booster technology
Another important factor in the realization of ISG's low speed and high torque is the combined application of Cummins's patented XPI ultra-high pressure fuel injection system with overhead high pressure fuel line injectors. The over-head design of the high-pressure fuel pipe brings more flexibility to the arrangement of the injector in the cylinder head, meets the requirements of the upright centering of the nozzle of the advanced diesel engine design, and creates conditions for the optimization of the air-flow mixing and combustion process. Together with the super high injection pressure of the fuel system, the flexible and controllable fuel injection pattern and the perfectly optimized nozzle and shape of the combustion chamber, it achieves the superior performance of low speed and high torque.
Cummins XPI Ultra High Pressure Injection System, widely used in famous foreign models
Technology pioneers lead the future! ISG Super Dynamics dares to break through and be creative, leading the arrival of a new era of heavy-duty diesel power!
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