What are the three types of turbos?

The turbocharger technology is currently undergoing a critical transition from traditional mechanical optimization to the integration of electrification and intelligentization. The technological development in 2026 will mainly be reflected in four aspects: First, the industrialization of electric turbochargers (E-Turbo) is accelerating. They employ high-speed motors (with rotational speeds exceeding 200,000 rpm) combined with air bearing or magnetic levitation technology, completely eliminating turbo lag. They are particularly suitable for 48V mild hybrid and high-performance hybrid models, and their costs are expected to decrease by 20%-30% over the next five years. Second, variable geometry turbocharger (VGT/VNT) technology has expanded beyond diesel engine applications and is being adopted in small-displacement gasoline engines. It resolves the trade-off between low-speed torque and high-speed power through precise blade angle adjustment. Third, dedicated R&D is being conducted for zero-carbon fuels. For instance, turbochargers for hydrogen internal combustion engines must address material hydrogen embrittlement and sealing challenges, while those for ammonia/methanol fuels require enhanced corrosion-resistant coatings to withstand acidic combustion byproducts. Fourth, in the commercial vehicle sector, optimized coordinated control of two-stage turbocharging with SCR/EGR systems improves the energy efficiency of large-displacement diesel engines through the integration of exhaust gas recirculation and selective catalytic reduction. On the market front, despite the growth of battery-electric vehicles, turbochargers will maintain a compound annual growth rate of approximately 3.5%, driven by hybrid vehicle demand (global hybrid production is projected to reach 27 million units by 2027), with VGT and E-Turbo emerging as the fastest-growing segments. The primary technical challenges involve the cost of silicon carbide power modules and complex thermal management systems. However, as the supply chain matures, these innovations will progressively address the full spectrum of requirements from economy to premium vehicle segments.

Turbocharging is a technology that enhances power output by recovering the energy from engine exhaust gases. Its core components consist of a turbine and a compressor connected coaxially. When the engine is running, high-temperature exhaust gases drive the turbine to rotate at high speed, which in turn drives the compressor to compress external air and deliver it into the cylinders. This increases the air density entering the combustion chamber per unit time, allowing more fuel to be injected for more complete combustion. Consequently, power and torque are significantly improved without increasing the engine displacement. For example, a typical 1.5T engine can achieve performance levels comparable to a 2.0L naturally aspirated engine through turbocharging. Modern technologies such as twin-turbo systems optimize boost efficiency across different engine speeds by coordinating the operation of two turbochargers, while variable geometry turbos enhance low-speed response by adjusting the angle of guide vanes. These innovations enable turbocharged engines to reduce "turbo lag" while maintaining fuel efficiency. It should be noted that turbocharged engines require the use of high-temperature engine oil that meets specifications, along with regular maintenance of the intake system and cooling devices, to ensure long-term stable operation. This technology has been widely adopted in mainstream models in the domestic market and has become a key solution for balancing power performance with environmental requirements.

The origin of turbocharging technology can be traced back to 1905, when Swiss engineer Alfred Büchi first proposed it and obtained a patent. Its core principle is to use engine exhaust gas to drive a turbine, which in turn drives a compressor to increase the intake air density and enhance power output. This technology was initially applied to aircraft engines to solve the problem of power loss at high altitudes. In 1918, General Electric of the United States verified its effectiveness on the Liberty L-12 aircraft engine. Starting in the 1920s, turbocharging was gradually adopted in marine and truck diesel engines. In 1951, Germany's MAN AG introduced the first turbocharged diesel truck. The application in the automotive field began in 1962 with General Motors' Oldsmobile F-85 Jetfire and Chevrolet Corvair Monza Spyder, but it failed to gain widespread adoption due to immature technology. The oil crisis in the 1970s spurred technological innovation. In 1974, the BMW 2002 Turbo and in 1975 the Porsche 911 Turbo associated turbo technology with high performance, while the 1977 Saab 99 Turbo addressed the issue of turbo lag and marked the first successful commercialization of this technology in family cars. Modern turbocharging systems have evolved into intelligent solutions incorporating technologies such as twin-scroll turbos and electric assistance, becoming a key method for improving fuel efficiency and power. Currently, over 90% of diesel vehicles and half of gasoline vehicles utilize this technology.

The cost of turbocharging modification varies depending on the vehicle model, type of supercharger, and the service provider. The total cost for exhaust turbocharging modification of ordinary models typically ranges from 8,000 to 20,000 Malaysian Ringgit. For instance, the modification cost for models such as the Zhonghua V3 is approximately 3,500 to 8,000 Malaysian Ringgit, while high-end models may exceed 20,000 Malaysian Ringgit. Due to its simpler structure, the cost of electric turbocharging (including materials and labor) is about 1,500 to 2,000 Malaysian Ringgit; whereas mechanical supercharging systems, being more technologically complex, can cost 40,000 to 50,000 Malaysian Ringgit. Quotations from 4S shops are generally higher than those from independent repair shops. For example, original turbocharger parts cost around 13,000 Malaysian Ringgit, with an additional labor fee of approximately 1,000 Malaysian Ringgit, while the same service at a repair shop may reduce costs by 30%. It is important to note that modifications involve ancillary projects such as engine tuning and cooling system upgrades, and must be registered with JPJ to ensure compliance. In the long term, turbocharged vehicles require more frequent maintenance, with an average annual maintenance cost about 300 Malaysian Ringgit higher than naturally aspirated engines, though improved fuel efficiency can partially offset this expense. Car owners are advised to select certified service providers based on vehicle compatibility and prioritize OEM solutions to safeguard after-sales benefits.

Currently, multiple car models adopt turbocharging technology. Among them, the Mitsubishi Triton is equipped with a 2.4L "two-stage" turbocharged diesel engine; its high-output version delivers a maximum power of 204PS and a torque of 470Nm, balancing performance and fuel economy, making it suitable for commercial and off-road needs. The Proton S70 comes standard with a 1.5L four-cylinder turbocharged gasoline engine across all trims, producing 181 horsepower and 290Nm of torque, paired with a 7-speed dual-clutch transmission, positioned as a cost-effective family sedan. The Chery Tiggo 8 features a 1.6T turbocharged engine, offering 197 horsepower and 290Nm of torque, matched with a 7DCT transmission, and focuses on seven-seater practical space. As a flagship SUV, the Volkswagen Touareg R-Line is equipped with a 3.0L V6 turbocharged engine, generating 340 horsepower and 450Nm of torque, combined with the 4Motion all-wheel drive system and air suspension, emphasizing luxury and performance. Turbocharging technology enhances power efficiency through forced induction while optimizing emissions, and has become a mainstream solution for improving vehicle performance, covering a diverse range of models from pickup trucks to luxury SUVs.