Whether it is ordinary cars, SUVs or supercars, turbocharging technology has become commonplace, and even turbocharged engines are increasingly seen on MPV models. From the perspective of emission tax, small-displacement turbocharged engines take advantage of natural intake over large displacements, and as turbocharging technology continues to mature, for example, turbo lag is improved and engine smoothness is improved. , turbocharged and MPV models this combination will not have too much concern. JAC is one of the applications of turbocharger technology in MPV models. Let's take a look at its latest 2.0T engine.

● Trend of MPV equipped with turbocharged engine

In the traditional Chinese concept of cars, MPV models have always been in the form of a commercial vehicle. With the changes in the concept of car awareness, MPV models have gradually been recognized by consumers who have focused on home use in recent years. MPV is more practical than they think, and sales of MPV models have gradually increased. At the same time, turbocharging technology has also matured. Today, you can see that the MPV models equipped with turbochargers have also become a trend.

After launching the 2.0T version of Ruifeng M5, JAC did not stop improving the 2.0T engine (codenamed HFC4GA3-1D). At the 2016 Guangzhou Auto Show, it also showed us his latest achievements - the improved JAC. 2.0T engine (codename HFC4GA3-4D). They are completely different from the 2.0T engine on the Jac refine S5. It is only developed and tuned for the JAC MPV models.

The cylinder of this engine is made of cast iron. Compared to more and more aluminum alloy cylinder engines, it is obviously still somewhat inadequate in terms of weight. The manifold injection system is used in the engine, and the improvement of power and fuel economy can not be matched with the direct injection system in the cylinder. Based on cost considerations, perhaps this entry-level SUV model is more concerned with reliability and durability.

Compared to the 2.0T engine (codenamed HFC4GA3-1D) on the current Ruifeng M5, the updated 2.0T engine did not change much in terms of technical configuration, but only optimized the engine's power level through detailed optimization. A certain increase.

Through the adjustment of variable timing technology and turbocharger, JAC obviously pays more attention to the low-torque performance of the engine. The official parameters given in the index indicate that the engine can output 170 N·m of torque at 1000 rpm. The torque can be quickly pulled to 280 N·m at 1800 rpm. This is theoretically undoubtedly a good thing for an MPV model that often carries passengers or pulls goods, avoiding the soft start-up phenomenon.

For MPVs with a relatively compact engine compartment, it is difficult to design a space between components, so the heat source also needs more careful control, so you can see a more comprehensive separation on this engine. Hot plate protection.

The integrated exhaust manifold can reduce the length of a certain airway, and it also has a positive effect on the engine's low-speed torque output. In addition, JAC's 2.0T engine uses a water-cooled intercooler. The water-cooled intercooler is common on many passenger cars currently equipped with turbocharged engines. Compared to air-cooled ones, it is also The intake air temperature can be better controlled and turbocharged. Of course, the water-cooled intercooler can also be further reduced in size, which facilitates the layout of compact engine compartments for MPV models.

to sum up:

In general, the current engine in the current mainstream passenger car market, configuration and technical content is not high, the intake side variable timing system, manifold injection, water-cooled intercooler has become more common Engine technology. However, it can be seen that turbocharging technology can be considered as a trend for future MPV models. Replacing large-capacity naturally-aspirated engines with smaller-capacity turbocharged engines reduces the emission tax, and at the same time, it can also output enough torque at low torque through adjustment. Why not?


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