YANMAR Diesel Power - TNE Series Diesel Engine

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* The TNE Model has now been superseded by the TNV series and only limited stock is available as production has ceased*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)

TNE - Power Pack Configuration

MODEL	Max Output (hp @ rpm)	Bore x Stroke (mm)	Displacement (cc)	Dry Weight (kg)	Irrigation / Generator Pack Configuration Download Brochure - PDF
3TNE68	17.3 @ 3000	68 x 72	784	70
3TNE74	22.1 @ 3000	74 x 78	1006	85
3TNE78A	26.7 @ 3000	78 x 84	1204	112
3TNE84	33.0 @ 3000	84 x 90	1496	138
3TNE88	36.3 @ 3000	88 x 90	1642	138
4TNE84	44.1 @ 3000	84 x 90	1995	160
4TNE84T	55.3 @ 3000	84 x 90	1995	165
4TNE88	48.3 @ 3000	88 x 90	2190	160
4TNE94	57.7 @ 2500	94 x 100	2776	223*
4TNE98	68.5 @ 2500	98 x 110	3319	223*
4TNE106	90.8 @ 2500	106 x 125	4412	320*
4TNE106T	112.9 @ 2500	106 x 125	4412	340*	* Includes housing

Click on model name above for further details including:
. Full Specifications
. Accessories
. Performance Curves
. AutoCAD Drawings

Clean
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.

Silent
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.

Asbestos Free
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.