TNE Series (11.5 - 112.9hp)
* The TNE Model has now been superseded by the TNV series and only limited stock is available as production has ceased*
An engine developed with "clean & silent" in mind
With low volumes of dead space around and above the piston, multi-hole fuel injectors operating at higher pressure than in the past, fuel injection systems matched closely to engines, improved swill inlets - all these have combined to create an extremely low smoke engine, especially in the critical start-up & low-load modes.
With low piston slap, low timing gear meshing noise, low crank journal slap, and reduced flywheel air-rush noise, the TNE Series of engines keeps unwanted noise to an all-time minimum.
Yanmar reinforces its commitment to creating outstanding engines that strive to be as friendly as possible to the user and the environment.
- Water Cooled by Radiator
- Vertical Multi Cylinder
- Most models Direct Injection (lower hp models IDI)
We call it our "semi open deck construction", and it is a feature of all our direct injection TNE engines. When combined without super-thin full metal head gasket and high top piston ring design, it means that dead spaces and cool air pockets (places the flame front finds hard to reach, and which are a major source of unburned exhaust gases) are reduced. We've also worked on our water galleries to further cool any hot spots in the piston area of the block and improved the swirl characteristics in and around our combustion chamber. When these are teamed with the extremely close matching of injection pumps and nozzles, the resulting exhaust gas is impressively clean.
The TNE engines have significantly lower noise levels, especially mechanical noises. Timing gears and injector drive gears are two areas which have received intense design effort. Helical profile gears are quieter, and the use of stiffer shaft material has reduced flex allowing finer bearing tolerances. No crankshaft bearing will be a perfect fit on a shaft if the dimensions of the bearing's back are incorrect. On Yanmar's TNE line, each block and bearing cap is measured, and the closest fit bearing set is selected from available stock. This adds further to accuracy and reduces noise. Flywheel noises, usually created by air turbulence, are sealed inside the flywheel housing by a special flange (4TNE94 and 4TNE98).
Compact and powerful
The TNE series marks a whole new generation of Yanmar industrial diesel engines. They are an ideal choice for many areas of compact engine use. The TNE engines most notable features are: high thermal and efficiency and improved mountability. Durability and Reliability
The TNE engines now proudly take up the running as Yanmar's premium small industrial diesel. They offer even more enhanced durability due to better block cooling, due to stiffer crank and pistons, also due to finer journal and other tolerances.
Yanmar uses no asbestos products in its TNE engines, manufacturers in a freon-free plant, washes its parts with liquids that are not major threats to the environment - in short Yanmar believes that being a good neighbour on planet earth goes deeper than just exhaust gas regulations.
Convenient "One-Side" Maintenance
All parts that require regular checking and replacement are conveniently grouped on the same side of the engine. They are positioned for easy maintenance and are a significant advantage, especially when engines are to be installed in locations where space and access is at a premium.
Mountability and Flexibility
TNE series engines are suitable for generator use, for general industrial machinery, agriculture, materials handling, construction, mowing, pumping etc. These units are achieving wide acceptance by distributors, dealers and OEM's for their superior mountability when coupled with various machinery.
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