Supplying technologies that support vehicle makers across the powertrain evolution, Marelli will showcase its latest e-Transmission Cooling Pump, a system engineered to deliver precise, on-demand oil cooling for modern transmissions. The solution maximizes efficiency, enabling a 30-watt saving compared with the main market benchmark.
With solutions for different propulsion configurations and regional requirements, Marelli will highlight a selection of innovations among the solutions at its booth at Auto China 2026.
The company’s latest e-Transmission Cooling Pump technology is based on a modular solution for transmission control, designed and optimized specifically for e-axles and dedicated hybrid transmissions (DHT), which offers high efficiency (40%), seamless integration and a competitive cost. Leveraging a flexible design which uses brushless technology and integrated electronics, the same base module can also support other multiple applications at the transmission level.
Among its main features, the technology delivers operational efficiency, minimizes energy consumption and improves both electric and fuel economy. Designed for compatibility with mechanical and electronic environments, the solution reduces integration and validation costs. Available in both 12-volt and 48-volt variants, it is the first application of Marelli’s modular smart actuator concept that will address a wide range of automotive applications, ensuring compatibility with current vehicle architectures and emerging multivoltage platforms.
Marelli will also showcase its flex fuel system, which addresses the demand for sustainable, high-performance 3- and 4-cylinder engines by enabling the use of biofuels and ethanol. Automatic fuel detection optimizes fuel efficiency and emission performance, while integrated fuel rail heaters ensure reliable cold starts. The system delivers enhanced flexibility, reduced environmental impact and design and manufacturing tailored to regional market requirements.
Thermal management
In addition to propulsion solutions, Marelli will also present innovations from its Green Technologies division, which focuses on optimizing vehicle thermal energy and exhaust gas management.
Merelli will highlight a selection of technologies designed to maximize thermal efficiency for hybrid and electric powertrains, including the High-Performance Chiller, which enhances battery thermal management in electrified vehicles. Compared with previous designs, the solution delivers higher heat exchange performance, improving battery temperature control and energy efficiency. These gains are achieved through an ultra-fine inner fin structure and a lightweight design, which allow compact dimensions and more uniform refrigerant flow. The system supports high charging rates, while offering strong cost advantages.
The eAxle Oil Cooler is a lightweight and efficient solution for effective heat exchange. It features a new inner fin design that enables compact size and improved thermal performance, combined with an optimized dimple structure that increases water flow speed and reduces dead water areas, boosting cooling efficiency. The miniaturized design delivers space and weight savings, offers flexibility to accommodate different layouts and provides cost advantages while meeting stringent performance standards.
Finally, the company will feature the Full Aluminum Radiator, a solution for electric powertrains. The low-temperature radiator is designed to support efficient and reliable battery cooling for new energy vehicles. The solution enables high heat transfer performance and flexible layout, offering reduced costs and faster cooling.
Auto China 2026 will take place in Beijing from April 24 to May 3.
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