Cummins M-series engine

{{Infobox automobile engine

|name = Cummins M-series engine

|image =

|manufacturer = Cummins

|aka = M11, M11 CELECT Plus, ISM, ISMe

|production = 1994–2010 (M11, M11 CELECT, ISM)
1994–present (ISMe)

|predecessor = Cummins L10

|successor = ISX12

|configuration = Straight six diesel engine

|displacement = {{convert|10.8|litre|cuin|1|lk=on}}

|bore = {{convert|4.921|in|1}}

|stroke = {{convert|5.787|in|1}}

|length =

|width =

|height =

|diameter =

|weight =

|block = Cast iron, CGI Compact Graphite

|head = Cast iron

|valvetrain =

|turbocharger = Holset Variable Geometry Turbocharger (ISM)

|fuelsystem =

|management =

|fueltype = Diesel

|oilsystem = Wet sump

|coolingsystem = Water cooled

|power =

|specpower =

|torque =

|compression =

|fuelcon =

|specfuelcon =

|oilcon =

}}

The Cummins M-series engine is a straight-six diesel engine designed and produced by Cummins. It displaces {{convert|10.8|litre|cuin|1|lk=on}}. Introduced as the M11 in 1994, it was built on the previous L10 engine (same {{convert|4.921|in|1}} cylinder bore, but a longer {{convert|5.787|in|1}} piston stroke compared to the L10's {{convert|5.354|in|1}} stroke).

Later M11's received the electronic CELECT and CELECT Plus fuel systems consisting of a gear pump and solenoid controlled injectors. The M11 CELECT Plus became the ISM when Cummins applied its Interact System (hence the "IS" in ISM) to the M11 CELECT Plus in 1998 to further improve the engine. The ISM is available in four configurations, with slightly-different emphasis on maximum power ({{convert|450|hp|kW PS|0|lk=in}} vs. {{convert|500|hp|kW PS|0}}) and peak torque.{{cn|date=August 2012}}

Applications

Large transit buses (40 feet and up).[http://cumminsengines.com/every/misc/ratings.page? Cummins engine ratings], Cummins website, 2009, accessed 2010-08-18.
Coaches
Large fire trucks
Heavy-duty trucks
Off-Highway (QSM11)

Popular power ratings

;Urban bus{{cn|date=August 2012}}

:{{convert|925|lbfft|0}} @ 1200 rpm, {{convert|280|hp|kW PS|0}} (209 kW) electronically governed at 2,100 rpm

:{{convert|1150|lbfft|0}} @ 1200 rpm, {{convert|330|hp|kW PS|0}} (246 kW) electronically governed at 2,100 rpm

;RV, Truck, Motorcoach{{cn|date=August 2012}}http://www.cummins-sp.com/document_library/Engine%20Ratings/ISM_engine_ratings.pdf{{dead link|date=August 2017 |bot=InternetArchiveBot |fix-attempted=yes }}

:{{convert|1050|lbfft|0}} @ 1200 rpm, {{convert|280|hp|kW PS|0}} (209 kW) electronically governed at 2,100 rpm

:{{convert|1150|lbfft|0}} @ 1200 rpm, {{convert|310|hp|kW PS|0}} (246 kW) electronically governed at 2,100 rpm

:{{convert|1250|lbfft|0}} @ 1200 rpm, {{convert|330|hp|kW PS|0}} (209 kW) electronically governed at 2,100 rpm

:{{convert|1350|lbfft|0}} @ 1200 rpm, {{convert|330|hp|kW PS|0}} (246 kW) electronically governed at 2,100 rpm

:{{convert|1350|lbfft|0}} @ 1200 rpm, {{convert|350|hp|kW PS|0}} (209 kW) electronically governed at 2,100 rpm

:{{convert|1350|lbfft|0}} @ 1200 rpm, {{convert|370|hp|kW PS|0}} (246 kW) electronically governed at 2,100 rpm

:{{convert|1450|lbfft|0}} @ 1200 rpm, {{convert|370|hp|kW PS|0}} (246 kW) electronically governed at 2,100 rpm

:{{convert|1450|lbfft|0}} @ 1200 rpm, {{convert|400|hp|kW PS|0}} (246 kW) electronically governed at 2,100 rpm

:{{convert|1550|lbfft|0}} @ 1200 rpm, {{convert|425|hp|kW PS|0}} (246 kW) electronically governed at 2,100 rpm

:{{convert|1450|lbfft|0}} @ 1200 rpm, {{convert|450|hp|kW PS|0}} (246 kW) electronically governed at 2,100 rpm

:{{convert|1550|lbfft|0}} @ 1200 rpm, {{convert|500|hp|kW PS|0}} (246 kW) electronically governed at 2,100 rpm

References

External links

[https://web.archive.org/web/20090503040824/http://www.everytime.cummins.com/every/applications/heavy_duty_trucks/ism.page Cummins ISM]

Category:Cummins diesel engines

Category:Diesel engines by model

Category:Straight-six engines