Engines · Marine diesel engines

Discovery Energy marine diesel engines

EPA certification records list 41 marine diesel engine families from Discovery Energy, model years 2013–2026. Rated power ranges from 15 to 49 kW, median 25 kW. Naturally aspirated engines make up 66% of families. The most families were certified in 2022 (4).

Engine families41
Engine models16
Model years2013–2026
Power range15–49 kWmedian 25 kW
Rank in category#17of 33 makers by families

Power distribution

Number of engine families by rated power.

0–19 kW19
19–37 kW13
37–56 kW9

Families certified per year

20131
20142
20152
20162
20172
20183
20193
20203
20213
20224
20234
20244
20254
20264

Technical mix

Fuel
Distillate Diesel Fuel36Diesel(Part1065 LSD or ULSD)3Diesel (Part 1065 LSD or ULSD)2
Aspiration
Naturally aspirated27Turbocharged9Naturally Aspirated5
Configuration
4 Stroke Compression Ignition364 Stroke5
Cylinders
2 cyl13 cyl94 cyl28

Most certified engine models

Llc. 20224Llc. 20264Llc. 20254Llc. 20244Llc. 20234Llc. 20213Llc. 20203Llc. 20193Llc. 20183Llc. 20172Llc. 20162Co. 20151

Engine families

FamilyModelYearPowerFuel
TKHXN01.4SF1Llc. 2026202618 kWDistillate Diesel Fuel
TKHXN01.9DIMLlc. 2026202618 kWDistillate Diesel Fuel
TKHXN02.5DIMLlc. 2026202630 kWDistillate Diesel Fuel
TKHXN02.5TCRLlc. 2026202649 kWDistillate Diesel Fuel
SKHXN01.4SF1Llc. 2025202518 kWDistillate Diesel Fuel
SKHXN01.9DIMLlc. 2025202518 kWDistillate Diesel Fuel
SKHXN02.5DIMLlc. 2025202530 kWDistillate Diesel Fuel
SKHXN02.5TCRLlc. 2025202549 kWDistillate Diesel Fuel
RKHXN01.4SF1Llc. 2024202418 kWDistillate Diesel Fuel
RKHXN01.9DIMLlc. 2024202418 kWDistillate Diesel Fuel
RKHXN02.5DIMLlc. 2024202430 kWDistillate Diesel Fuel
RKHXN02.5TCRLlc. 2024202449 kWDistillate Diesel Fuel
PKHXN01.4SF1Llc. 2023202315 kWDistillate Diesel Fuel
PKHXN01.9DIMLlc. 2023202318 kWDistillate Diesel Fuel
PKHXN02.5DIMLlc. 2023202330 kWDistillate Diesel Fuel
PKHXN02.5TCRLlc. 2023202349 kWDistillate Diesel Fuel
NKHXN01.4SF1Llc. 2022202215 kWDistillate Diesel Fuel
NKHXN01.9DIMLlc. 2022202218 kWDistillate Diesel Fuel
NKHXN02.5DIMLlc. 2022202230 kWDistillate Diesel Fuel
NKHXN02.5TCRLlc. 2022202249 kWDistillate Diesel Fuel
MKHXN01.4SF1Llc. 2021202115 kWDistillate Diesel Fuel
MKHXN02.5DIMLlc. 2021202130 kWDistillate Diesel Fuel
MKHXN02.5TCRLlc. 2021202149 kWDistillate Diesel Fuel
LKHXN1.37SF1Llc. 2020202015 kWDistillate Diesel Fuel
LKHXN2.48DIMLlc. 2020202030 kWDistillate Diesel Fuel
LKHXN2.48TCRLlc. 2020202049 kWDistillate Diesel Fuel
KKHXN1.37SF1Llc. 2019201915 kWDistillate Diesel Fuel
KKHXN2.48DIMLlc. 2019201930 kWDistillate Diesel Fuel
KKHXN2.48TCRLlc. 2019201949 kWDistillate Diesel Fuel
JKHXN1.37SF1Llc. 2018201815 kWDistillate Diesel Fuel
JKHXN2.48DIMLlc. 2018201830 kWDistillate Diesel Fuel
JKHXN2.48TCRLlc. 2018201849 kWDistillate Diesel Fuel
HKHXN1.37SF1Llc. 2017201715 kWDistillate Diesel Fuel
HKHXN2.48DIMLlc. 2017201730 kWDistillate Diesel Fuel
GKHXN1.37SF1Llc. 2016201615 kWDistillate Diesel Fuel
GKHXN2.48DIMLlc. 2016201630 kWDistillate Diesel Fuel
FKHXN1.37SF1Co. 2015201515 kWDiesel(Part1065 LSD or ULSD)
FKHXN2.48DIM2015201525 kWDiesel (Part 1065 LSD or ULSD)
EKHXN1.37SF1Co. 2014201415 kWDiesel(Part1065 LSD or ULSD)
EKHXN2.48DIM2014201425 kWDiesel (Part 1065 LSD or ULSD)
DKHXN1.37SF1Co. 2013201315 kWDiesel(Part1065 LSD or ULSD)

Other marine diesel engines makers

Caterpillar515John Deere407Cummins376Volvo Penta368Yanmar323Perkins180FPT Industrial178Mitsubishi Heavy Industries140Shibaura124Nanni Industries118MAN Truck & Bus111Beta Marine100

Source

US Environmental Protection Agency engine certification data. Model year and manufacturer are decoded from EPA engine family codes (EPA codes:KHX). An engine family is a group of engines certified together; one family can cover several power ratings.

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