{{Short description|American diesel aircraft engine}} {{Use mdy dates|date=July 2023}} {{Use American English|date=July 2023}} {{infobox aero engine |name = DH180 |image = |caption = |engine_type=Liquid-cooled V-four diesel piston aircraft engine |manufacturer=DeltaHawk Engines, Inc. |national_origin=United States |first_run=1997 |major_applications=Cirrus SR20 }}
The '''DH180''' is V4 piston diesel aircraft engine developed for aircraft applications by DeltaHawk of Racine, Wisconsin. The engine was type certified on April 7, 2023.<ref name="E00022CH">{{cite web|url = https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129316670820230720180841.0001?modalOpened=true|title = Type Certificate Data Sheet No. E00022CH |accessdate = July 25, 2023|author = Federal Aviation Administration|author-link = Federal Aviation Administration|date = April 7, 2023|archiveurl = https://archive.today/20230725124619/https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID129316670820230720180841.0001%3FmodalOpened%3Dtrue?modalOpened=true|archivedate = July 25, 2023|url-status= live}}</ref>
== Design ==
The design is a four-cylinder, two-stroke, piston diesel engine, in an inverted-V configuration, with turbocharging and supercharging, mechanical fuel injection, liquid cooling, direct drive. It can run on Jet-A or sustainable aviation fuel. The manufacturer claims that it has "40 percent fewer moving parts than other engines in its category."<ref name="E00022CH"/><ref name="Oconnor18May23"/>
== Development ==
In 2014, a DH180 was installed and demonstrated at the EAA Airventure airshow on a Cirrus SR20. A retrofit kit is planned for the SR20.<ref>{{cite journal|journal=AOPA Pilot|title=Diesels on the cusp|author=Jim Moore|page=87|date=March 2015}}</ref>
The engine received its type certificate from the Federal Aviation Administration on April 7, 2023, with first customer deliveries planned for 2024.<ref name="E00022CH"/><ref name="Oconnor18May23">{{cite web|url= https://www.avweb.com/ownership/engines/deltahawk-dhk180-receives-faa-certification/|title= DeltaHawk DHK180 Receives FAA Certification|access-date= 19 May 2023|last= O'Connor|first= Kate|work= AVweb|date= 18 May 2023 |archive-url= https://archive.today/20230519114959/https://www.avweb.com/ownership/engines/deltahawk-dhk180-receives-faa-certification/|archive-date= 19 May 2023|url-status= live}}</ref><ref name="CA27May23">{{cite web|url= https://canadianaviator.com/jet-fueled-piston-engine-certified/|title= Jet-Fueled Piston Engine Certified|access-date= 27 May 2023|work= Canadian Aviator |date= 27 May 2023|archive-url= https://archive.today/20230527110653/https://canadianaviator.com/jet-fueled-piston-engine-certified/|archive-date= 27 May 2023|url-status= live}}</ref>
The US National Aeronautics and Space Administration selected the engine for their ''Subsonic Single Aft Engine Aircraft'' scale flight test vehicle.<ref name="CA27May23"/>
==Variants== ;DHK180 :Certified version, {{convert|180|hp|kW|0|abbr=on}}<ref name="E00022CH"/><ref name="Oconnor18May23"/><ref name="CA27May23"/>
==Applications== *Barrows Bearhawk<ref name="Cook07Aug23">{{cite web|url= https://www.avweb.com/aviation-news/bearhawk-makes-deltahawk-an-option/|title= Bearhawk Makes DeltaHawk An Option|access-date= 8 August 2023|last= Cook|first= Marc|work= AVweb|date= 7 August 2023|archive-url= https://archive.today/20230808112335/https://www.avweb.com/aviation-news/bearhawk-makes-deltahawk-an-option/|archive-date= 8 August 2023|url-status= live}}</ref> *Cirrus SR20 *Lambert Mission 212 *Van's Aircraft RV-8 *Velocity XL
==Specifications (DHK180)== {{pistonspecs |ref=TCDS,<ref name="E00022CH"/> AVweb<ref name="Oconnor18May23"/> and manufacturer<ref name="Specs">{{cite web|url= https://www.deltahawk.com/engines/|title= Engines|access-date= 15 May 2023|author= DeltaHawk|work= deltahawk.com|archive-url= https://archive.today/20230521120713/https://www.deltahawk.com/engines/|archive-date= 21 May 2023|url-status= live}}</ref> |type=V4, two-stroke, liquid-cooled, piston, diesel aircraft engine |bore={{convert|4|in|cm|0|abbr=on}} |stroke={{convert|4|in|cm|0|abbr=on}} |displacement={{convert|202|cuin|L|0|abbr=on}} |length={{convert|33|in|cm|0|abbr=on}} |diameter= |width={{convert|24|in|cm|0|abbr=on}} |height={{convert|22|in|cm|0|abbr=on}} |weight={{convert|357|lb|kg|1|abbr=on}} |valvetrain= |supercharger=twin screw |turbocharger=yes |fuelsystem=mechanical injection, mechanical gear pump, one injection pump per cylinder |fueltype= certifies for Jet-A, Jet A-1, SAF; will also burn JP5, JP8, D1, D2, JP-8-100, F-24, |oilsystem= dry sump, external mechanical gear pump |coolingsystem=liquid |power={{convert|180|hp|kW|0|abbr=on}} at 2600 rpm, five minutes maximum for take-off; {{convert|135|hp|kW|0|abbr=on}} at 2200 rpm, continuous |specpower= |compression=20.1:1 |fuelcon=7.3 gal/hr (27.6 L/hr)at 135 HP Economy Cruise, 10.8 gal/hr (40.9 L/hr) at 180 hp<!--ref name="Specs"--> |specfuelcon={{cvt|{{#expr:7.3/135round3}}|USgal/hp/h|L/kW/h}}<!--ref name="Specs"--> |oilcon= |power/weight=0.50 hp/lb }}
==See also== * DeltaHawk DH160
==References== {{Reflist}}
==External links== *[http://www.deltahawk.com/ Company website] *[https://www.youtube.com/watch?v=uSfBcE_7jx0 Video of SR20 with DeltaHawk DH180] *[https://www.avweb.com/air-shows-events/airventure/airventure-2023-deltahawk-dhk180/ Video interview at AirVenture 2023]
Category:DeltaHawk aircraft engines Category:Aircraft diesel engines Category:1990s aircraft piston engines Category:V4 engines Category:Two-stroke aircraft piston engines Category:Liquid-cooled aircraft piston engines