Aiming for zero carbon! Cummins' new X series engine platform made its debut at IAA

At the IAA Commercial Vehicle Show held in Hanover, Germany this week, Cummins' brand-new X series engine platform suitable for multiple fuels made a stunning debut.

The all-new X series engines can run on a variety of low-carbon and zero-carbon fuels, offering users options of hydrogen internal combustion engines, biogas engines and advanced diesel engines. The new generation of X series engines will be available in 15L and 10L displacements, which can meet future ultra-low emission regulations, including the upcoming Euro 7 standard (expected to be implemented in 2027), and help the long-distance transport heavy truck fleet accelerate decarbonization.

Alison Trueblood, Executive Director of Cummins' European Road Business, said: "Cummins' new generation X series platform elevates internal combustion engine technology to a new level and can meet future ultra-low emission standards." This series of engines can use low-carbon and zero-carbon fuels, providing fleets with a lower-cost decarbonization technology path."

The brand-new 15L X series engine, suitable for multiple fuels, adopts a universal basic engine architecture. According to different fuel types, the component combinations above the engine cylinder head and the fuel system are customized and optimized.

Among them, the X15H hydrogen internal combustion engine can use zero-carbon hydrogen fuel, and the X15N natural gas engine can use biogas fuel, reducing carbon emissions by 90%. The X15H has a power output of up to 530hp(395kW), and the X15N has a power output of up to 510hp(380kW), making them ideal power choices for heavy-duty trucks with a total weight of 44 tons. The new generation of advanced X15 diesel engines can use hydrogenated vegetable oil (HVO) or B100 biodiesel fuel, with a maximum power of 650hp(485kW), meeting the demanding heavy-load transportation requirements.

The new generation X10 diesel engine has a maximum power of 450hp(335kW), meeting the demanding working conditions of heavy trucks. It offers lightweight and compact power options for vehicles with a total weight of 26 to 44 tons, maximizing the vehicle's payload capacity. Moreover, this engine is compatible with low-entry cab designs, meeting the operational requirements of cities. Just like the X15 platform, the all-new X10 series engines can also be used for multiple fuels and are expected to offer options for hydrogen internal combustion engines and biogas engines.

In addition to its outstanding environmental performance, the new generation of X series engines has significantly increased power density and a more compact size design, allowing truck manufacturers to design vehicles with greater ease. In addition, the X15 and X10 engines adopt a globally universal modular architecture, which can be compatible with different vehicle configurations and meet the emission regulations of various regions as well as the diverse preferences of customers. Trueblood added.

The all-new X series platform engine adopts a dual overhead camshaft design, significantly enhancing combustion and thermal efficiency, while also facilitating the installation of a more efficient engine braking system. The X series engines adopt an advanced friction-reducing design to minimize engine friction losses. At the same time, with the aid of advanced cylinder block casting technology, the product weight is further reduced.

In line with the Euro 7 emission standards

The developed X10 engine

The X10 engine is equipped with Cummins' latest XPI ultra-high pressure fuel injection system and an electric exhaust bypass turbocharger. Compared with Euro VI engines of the same displacement, its fuel economy can be improved by up to 7%(with variations under different operating conditions). In addition, the peak torque of the X10 engine reaches up to 2300Nm, enhancing the engine's response speed and vehicle driving performance.

The new generation of Cummins X10 engine meets the Euro 7 emission standards

Within the power range of 320-450hp(240-335kW), the X10 engine can meet the Euro 7 ultra-low emission regulations with the help of Cummins' latest compact cross (HDCC) after-treatment system. The HDCC modular design integrates a dual-selective catalytic reduction (SCR) device and is equipped with a dual urea injection system. It can inject vehicle urea water solution before and after tightly coupled SCR, achieving ultra-low emissions.

The new generation

X15 series engines

The X15H hydrogen internal combustion engine adopts an efficient direct injection lean-burn technology in the cylinder, capable of using zero-carbon green hydrogen fuel. Its power range covers 400-530 HP (298-395kW), with a peak torque of up to 2600Nm. Equipped with a 700-bar high-pressure large-capacity hydrogen storage system and powered by the X15H hydrogen internal combustion engine, the heavy-duty truck is expected to offer a potential range of over 1,000 kilometers. The hydrogen refueling time for hydrogen internal combustion engine vehicles is short, only about 15 minutes.

The X15 advanced diesel engine is equipped with Cummins' latest XPI ultra-high pressure fuel injection system, with power ranging from 450 to 650hp(335 to 485kW) and a peak torque of up to 3200Nm. The use of B100 biodiesel can reduce carbon emissions by 70%, and the use of hydrogenated vegetable oil (HVO) renewable fuel can reduce carbon emissions by up to 90%.

Cummins X Series 15L multi-fuel engine

The X15N engine uses renewable biogas fuel to provide the truck with a power output of 400-510 HP (298-380kW) and a peak torque of 2500Nm. Equipped with large-capacity liquefied gas (LNG) storage tanks, heavy-duty tractors can achieve a cruising range of 1,000 kilometers. In addition, the X15N adopts a silent design with low noise, making it highly suitable for urban operation.