Yanmar 4TNV98C-I
Series: TNV Common Rail Series (Power Gen)
Not the right version? The data comes from vehicle registers holding many near-identical versions side by side. Photograph the data plate — we read make and type from it. Open the scanner e-mail address required
Yanmar 4TNV86/4TNV98 common-rail series – the water-cooled four-cylinder industrial diesel engines for generator sets and industrial applications, with and without turbocharging, 6 versions
The TNV series is Yanmar's worldwide industrial diesel engine range, which from the 1990s replaced the maker's previously mostly air-cooled industrial engines with water cooling. This page gathers the common-rail versions of the 4TNV86 and 4TNV98 frame sizes the register did not assign to its own range from the US EPA certification data. CT marks the turbocharged version against the naturally aspirated C variant, the G and I suffixes distinguish the generator-drive version from the version for general industrial applications.
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The register lists here 6 versions of the four-cylinder frame sizes 4TNV86 and 4TNV98, each as a naturally aspirated and a turbocharged engine, in versions for generator drive and for industrial drive. Output ranges from 22.5 to 51.0 kW (30.2 to 68.4 hp) at a displacement of 2,091 to 3,319 cm³ and a rated speed of 1,500 or 1,800 rpm; dry weight lies between 235 and 305 kg, and depending on destination the versions meet the EU Stage V or EPA-CARB Final Tier 4 emission stage.
The TNV series is among the most widespread industrial diesel engines in the world and drives generator sets, compressors, construction machinery and pumps for numerous equipment makers who fit the engines as a supplied component into their own machines; common-rail injection replaced mechanical distributor injection in this series and lowered fuel consumption and emissions.
On these industrial engines, operating hours, the condition of the common-rail system and injectors, the cooling system and radiator, the condition of the turbocharger on the CT versions, and the tightness of the oil circuit and crankcase count; spares run through the worldwide Yanmar dealer network.
Sources: SpecCodex register, model data: Yanmar TNV Common-Rail-Serie, Yanmar (manufacturer)
Technical data
Engine
| Fuel | dieselcorrect |
|---|---|
| Power | 47.6 hp (35.5 kW)correct |
| Cylinders | 4correct |
| Cooling | water-cooledcorrect |
Dimensions and weights
| Dry weight | 300 kgcorrect |
|---|
Other data
| Aspiration | naturally aspiratedcorrect |
|---|---|
| Bore × stroke | 98x110correct |
| Dimensions | 944x632x809correct |
| Displacement | 3,319 lcorrect |
| Emission stage | EU Stage Vcorrect |
| Speed | 1,500 rpmcorrect |
Frequently asked questions
How much power does the Yanmar 4TNV98C-I have?
The Yanmar 4TNV98C-I delivers 47.6 hp.
What engine does the Yanmar 4TNV98C-I have?
4 cylinders, Diesel.
What to check before buying
- Match the data plate against the order: frame size, mounting and rating have to agree.
- For used units, ask about winding condition and bearing play.
- Ask about parts availability for this series — the running costs hang on it.
A general list for this type of machine — no substitute for an inspection or an appraiser.
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This page carries 12 individual figures for this model. They come from 1 recorded source; every figure can be traced there. What we cannot document is not here — we leave gaps open rather than estimate them.
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Other models in this series
Sources: [1]
Diesel engine in 3D section
Turn the model, look inside and click an assembly — each one is explained.