In the era of internal combustion engine, the engine is a major indicator for measuring the manufacturing capabilities of automobile manufacturers. Only the powerful manufacturers can make a nice engine. Volkswagen has a wealth of experience on the manufacturing turbine engine, which is most representative or a 1.4T turbocharged engine. Today, let us use the Volkswagen EA211 1.4T turbocharged engine as a benchmark to test what level is at the end of the independent brand 1.5T turbocharged engine.
Mass 1.4T turbocharged engine profile:
Volkswagen is a manufacturer that is more early to promote turbocharged engines in China. 2.4 power, 2.0 price, 1.4 fuel consumption is the most adductive metaphor for small displacement turbine boost engines. After many generations of evolution, the EA211 engine of Volkswagen has been very mature.
This No. 4T turbocharged engine of this code EA 211 can output 150 horsepower, peak torque is 250N.m, maximum torque platform From 1750-3000 turn. This engine is more broad in general natural intake engines, and has a relatively advantageous advantage in pushing back. This engine is widely used in a variety of models under the public and Audi, covering LaVida, Sagitar, Golf, Audo, Audi A3, Audi Q3 and other models, which can be seen that the application of this engine is relatively strong.
Let’s take a look at several representative independent brand 1.5T engines.
Great Wall Motor
GW4B15C 1.5T turbocharged four-cylinder engine
Great Wall car is powered on this code GW4B15C on Haval biscuits GW4B15C Engine, this is an engine using Miller cycle, compression ratio reached 11, thermal efficiency reached 38%. This engine can output 184 horsepower, the peak torque is 275N.m, the maximum torque platform is 1500 revolutions -4000 rp. Equipped with this launchThe Havi Breyb rabbit can complete the acceleration of 0-100km in 7.7 seconds.
Core technology: This 1.5T engine uses the combustion system of the medium injector + 350 bar fuel system pressure + new optimized design. The core design improves combustion efficiency; two-stage variable bar pump, reduce oil pump oil loss; water-cooled medium, shorten intake pipeline, enhance engine response ability; VGT superchargers are at low speed working conditions and high speed A balance between the conditions.
Changan Automobile
Representative model: Blue Whale NE 1.5T turbocharged four-cylinder engine 
Although everyone is constantly impanding blue whale engine, but we are from engine today The perspective of technology is analyzed. This engine still has a lot of highlights worthy of our praise. The 1.5T turbocharged engine “nominal” 180 horsepower on Chang’an Uni-T “nominal torque reaches 300N.m, and (maximum) heat efficiency reaches 40%. It is worth mentioning that this engine can output a peak torque of 300N.m at 1250, which means that this engine does not have a significant turbocode.
Blue Whale NE1.5T engine adopts double vortex turbocharged, double exit integrated exhaust manifold technology, can effectively improve Turbine work efficiency. This engine is also equipped with high pressure jet technology, and the injection pressure reaches 350 bar, which has played a positive role in the full combustion of fuel, and the carbon problem can also be improved.
Geely Auto
A representative model: JLH-3G15TD 1.5T turbocharged three-tone engine
Geely this 1.5T engine with Volvo’s Drive-e series engine has Thousands of silk, but I think there is nothing wrong, after all, Volvo cars are already Geely’s subsidiary. Taking the 1.5T turbocharged three-cylinder engine in Geely Bimen as an example, 177 horsepower can be output, the peak torque is 255N.m, only 1500 turnsIt is possible to output the maximum torque of 255n.m. As a reference in actual combat, the 100-kilometer acceleration time of Geei Fumin is 7.9S
Since this is a three-cylinder engine, the engineer is designed When this engine, the optimization of NVH is very hard. They use balance axes and other means to suppress the jitter of the three-cylinder engine, the actual effect is still nice, and the jitter sitting in the car can control in a reasonable range.
The most obvious feature of this engine is that the integration is high, and the adaptability is relatively strong. This engine uses modular designs that can be derived such as T4, T5. The modular design is reduced by the engine volume, and can be used in conjunction with the BSG motor, the PHEV hybrid system, etc., which is the benefit of high intensity.
Summary: This day, the public is not very good, 1750 turns is not very excellent. The peak torque speed can be explained. Our autonomous brand engine is an iteration of technology, whether it is response ability or an absolute power reserve, is more advantageous than the Volkswagen 1.4T engine. Today’s autonomous brand engine also starts the future, and it can adapt to the development trend of electricization, and the pattern is also very large.