As the heart of the car, the engine has always been a key project of the research and development of major mainstream independent brands. It can be said that behind each new generation of products, there are engineers who are strict in all aspects of the technical level, which also makes the mainland's progress in the field of automotive internal combustion engines gradually reach the international mainstream level.
On the afternoon of April 14, SAIC Motor officially released the new GS61 1.5T turbocharged direct injection engine. As one of its most revolutionary products, this powertrain has also been applied to mainstream models such as the third-generation Roewe RX5, and it is also the first product independently developed by SAIC and launched by SAIC Zhengzhou Engine Factory, so GS61 is obviously a milestone for the SAIC family.
From a technical point of view, the GS61 engine still inherits the excellent genes of SAIC's "Double Top Ten" powertrain, and at the same time, on the basis of the "Blue Core" power platform, it has comprehensively upgraded combustion optimization, thermal management and stability, bringing consumers a stronger and quieter driving experience.
Therefore, in order to improve the combustion efficiency and make full use of every drop of oil, the GS61 1.5T engine uses a 350 bar high-pressure fuel injection system, which uses the principle of atomization injection to quickly mix fuel with air to make combustion more complete. At the same time, the engine also optimizes the valve angle and bore, which ultimately improves the fuel economy of the GS61 engine by 6% compared with the previous generation, and the comprehensive fuel consumption of the third-generation Roewe RX5 is only 6.0L/100km, which is the best in the same class.
In terms of power, the new SAIC GS61 1.5T engine is also equipped with many leading patented technologies, so that the vehicle power output reaches 188 horses at the same time, bursting out a maximum torque of 300 Nm, which can be called the "small steel cannon" in the 1.5T world.
It is reported that in order to improve the responsiveness of the engine, the GS61 1.5T engine is equipped with VGT electronically controlled variable nozzle turbocharging technology, which has a high combustion efficiency in the fit, so that the response speed of the turbocharging is increased by 30% compared with the previous generation. At the same time, the piston linkage and other components of the engine have also been improved to avoid bias grinding, reduce the kinetic energy loss caused by friction of internal parts, and provide the driver with a "on-call" acceleration experience.
As the number of horsepower increases, so does the pressure on the engine cooling system, so engineers have also completely upgraded the thermal management system to address the heat generated by the GS61 1.5T engine in high-power operation. EWP electronic water pump technology enables precise control of coolant flow, providing precise heat management for vehicles, whether at cold start-up or under heavy load conditions.
In addition, the GS61 1.5T engine is also equipped with a high and low temperature dual circulation cooling system, two independent circuits can cope with high temperature and low temperature conditions respectively, so that heat dissipation and warmth are not wrong.
Finally, in order to optimize the NVH value and improve the quiet driving quietness, the GS61 1.5T engine also reduces the noise of the core parts such as the crank connecting rod mechanism and timing system, and the key parts adopt the principle of acoustic wrapping, while reducing idle noise, bringing a library-level silent experience to the cockpit.
Automotive Network Review: Reliability is the foundation of technology
In the past, SAIC motor has won the reputation of the top ten engines with the "Chinese core" power, and now, with the blessing of the new generation GS61 1.5T powertrain, SAIC Motor has also completed a perfect transformation. Therefore, the new third-generation GS61 1.5T turbocharged direct injection engine, in addition to having more powerful fuel economy, power and quietness and other advantages, but also in terms of durability has reached the world's first-class level.
It is understood that in order to verify its reliability, SAIC Motor has conducted a 55,000-hour bench experiment on the GS61 1.5T turbocharged direct injection engine, which has perfectly passed more than 60 special experiments and can still show its superior performance in various extreme environments. For the domestic engine that has been "criticized" by people, the successful release of GS61 1.5T power also proves that SAIC motor has excellent R & D strength and leading position in its own brand.