Yanmar Diesel Engines 

We offer the full range and the best prices of Yanmar Diesel Engines on the full Yanmar range.

TNV Series (13.4 - 83.8mhp)

TNV Series, Center IrrigationThe new TNV Series engines delivers a host of new features to bring the acclaimed ‘clean and silent’ TNE Series to a whole new performance level. Meaning Total New Value, the Yanmar TNV Series offers a range of new engine improvements to make these popular work horses even more efficient, more quiet and more refined than ever.

The smaller Indirect Injection (IDI) engines have been made more efficient with Yanmar Researchers improving engine combustion by altering flow mixing of air and fuel while a new, more compact  in-line fuel injection pump has been developed for the TNV Series for faster fuel control and lower emissions.

The larger Direct Injection (DI) engines have also seen a makeover. Uneven atomisation of fuel in the combustion chamber has been reduced by changing the angle of the injector nozzle. A greater swirl effect in the combustion chamber has been achieved to increase the fluid energy of the air and fuel charge plus a new MP fuel injection pump delivers high injection pressure and more even injection between the cylinders. Uniform atomisation is further enhanced with a more perforated fuel injection nozzle and engine noise is minimised with an optimised cylinder block and muffler design.

TNE is now the new TNV delivering Total New Value for Yanmar diesel owners.

  • Water Cooled by Radiator
  • Vertical Multi Cylinder
  • Most models Direct Injection (lower hp models IDI) 

Model 

Max Output
(hp @ rpm) 

Bore x
Stroke
(mm) 

Displacement
(cc) 

Dry Weight
(kg)
 

2TNV70

13.4 @ 3600

70 x 74

0.57

73

3TNV70

21.5 @ 3600

70 x 74

0.854

87

3TNV76

26.1 @ 3600

76 x 82

1.116

94 

3TNV82A

29.4 @ 3000

 82 x 84

1.331 

112 

3TNV84T

39.0 @ 2800

84 x 90 

1.496

142 

3TNV88

 36.3 @ 3000

88 x 90

1.642 

138 

4TNV84T

55.3 @ 3000 

84 x 90 

1.995 

165 

4TNV88

47.5 @ 3000 

88 x 90 

2.19 

160 

4TNV98

68.5 @ 2500

98 x 110 

3.319 

235(SAE#4) 

4TNV98T

 83.8 @ 2500

98 x 110 

3.319 

2459SAE#) 

Emission Reduction

Cleaner engines with even lower exhaust emissions are achieved by improving on the already excellent TNE base. Stricter emissions standards are cleared by a wide margin. 

IDI Engines 

Combustion Chamber
By investigating flow characteristics using experimental and numerical analysis methods, Yanmar research has achieved improved flow mixing in both the main chamber and the special mouth surrounding the injector.

Fuel Injection Equipment

Mechanical Pump
Instead of a PFR pump, a newly developed in-line pump has been used for the smaller TNV engines. Adjustments are made solely in the Yanmar's own FIE factory ensuring precise compliance with regulations. 

DI Engines

Nozzle Instulation Angle
The installation angle of the fuel injection nozzle is greater than thatin conventional engines, so that uneven atomization of fuel between injections can be reduced. Excellent matching between intake swirl ratio and the shape of the combustion chamber has resulted in uniform mixing of fuel in the combustion chamber.

Combustion Chamber

It increase the fluid energy of the air and fuel charge. The swirl effect produced in the chamber continues while combustion occurs, aiding mixing and results in lower exhaust emissions compared to conventional chambers.

Fuel Injection Equipment

MP Pump
A new MP pump has been developed especially for the TNV engiune series. Our aim was to make improvements over a wide range of areas to even further reduce emissions. 

Fuel Injection Nozzle 

Multiple numbers of very small holes are used to achieve uniform atomization. Holes are not simple drilled, their inside edges are carefully rounded to promote even flow and direction of spray, also to reduce resistance. Low sack nozzle profile improves combustion. Double corn shape protects from cavitation. 

Noise Level Reduction

Cylinder Block Noise Reduction
Yanmar's original CAE techniques have optimized the stiffness, minimized transformation and reduced radiant noise.

Muffler Noise Reduction

Original CAE technique is used to design a muffler with optimized volumes and sound isolation materials. 
 
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