Large Bore Engine | Tenneco

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High Efficiency Components for Tomorrow’s

Large Bore Engine

The Large Bore Engine (LBE) industrial market includes 2-stroke and 4-stroke engines with bore sizes above approximately 145 mm. A typical application for 2-stroke LBEs is maritime propulsion for big vessels. The main focus in the 4-stroke area is maritime propulsion for big but also for midsize and small vessels. This market also includes maritime auxiliary use, stationary power generation, railway, construction and the defense industries.

Technical challenges for LBEs are increasing, requiring each new engine generation to take ever larger steps in reducing emissions, fuel and oil consumption, downtime and running costs. That means optimizing every critical component to ensure it is as efficient as it possibly can be: not only in its specification, but also in the way it interacts with the complete engine system and the environment.

Tenneco offers a portfolio of award-winning technologies that help achieve design goals more quickly and cost-effectively.

Tenneco LBE Brochure

Pistons

From high-performance Monosteel® pistons to cost-effective aluminum options – designed for heavy-duty engines up to 220 mm bore. Precision cooling channels and innovative materials provide outstanding strength and reliability.

LBE Bearings

Lead-free, robust engine bearings designed for extreme loads in marine, power generation, and industrial environments. Built for long service life, high operational stability, and environmental compliance.

LBE Rings

Engineered to deliver reliable sealing for bores up to 980 mm, even under the most demanding conditions. Advanced coatings like GDC® and CKS® ensure extended durability and optimized performance.

LBE Valves and Valve Seats/Guides

Monometallic, bimetallic, and hollow valves tailored for extreme thermal and mechanical stress. Precision-engineered seats and guides guarantee optimal sealing and efficient heat transfer.

LBE Ignition/Champion

Cutting-edge ignition technologies including pre-chamber, bridge, and cold-type spark plugs for gas-powered large engines. CFD-optimized design enhances combustion speed, efficiency, and emission control.

LBE Sealing/Gaskets

High-performance sealing solutions designed to withstand extreme pressures, temperatures, and vibration. Custom-developed gaskets ensure reliable, leak-free operation in the toughest engine environments.

Large Bore Engine Market

rail

construction

mining

STATIONARY POWER

marine