This article relies largely or entirely on a single source. Relevant discussion may be found on the talk page. Please help improve this article by introducing citations to additional sources. Find sources: "Volkswagen D24 engine" – news · newspapers · books · scholar · JSTOR(July 2009)
Attached to the cylinder head is a cast aluminium alloy intake manifold on one side, and two cast iron exhaust manifolds on the same side (it's a non cross flow engine) (one manifold for three cylinders) followed by a two in one exhaust pipe system. The fuel system uses a Bosch mechanical distributor-type (Bosch VE type) injection pump which feeds indirectfuel injection into a remote whirl pre-combustion chamber.
The cooling system is composed of a timing belt driven water pump, an 87 °C thermostat in the engine block itself. The thermostat receives coolant from the engine block and from a bypass running from the engine head. This system allows a very accurate opening and closing operation, avoiding thermal shocks and big coolant temperatures amplitude.
The initially available variant of the D24 produced a DIN-rated power output of 55 kilowatts (75 PS; 74 bhp) at 4,500 rpm; and it generated a torque of 155 newton-metres (114 lbf⋅ft) at 2,800 rpm.[1] Subsequent minor updates and revisions resulted in differing power and torque ratings.
The D24 was fitted in the Volkswagen LT range from Volkswagen Commercial Vehicles, with factory production from August 1978 to December 1995.[1] Specific dates of the variants - CP: 08/78-11/82, DW: 12/82-07/92, 1S: 08/88-07/92, ACT: 08/92-12/95.[1]
The D24 was also found in a number of Volvo models, specifically the 240, 740, and 940, and it was coupled to Volvo ZF, Automatic Aisin Warner AW55, Automatic Borg Warner BW55, M45, M46 (overdrive) or M47, M47 II and M90 transmissions.
In service, the unit proved to be a somewhat mixed bag; some owners reported excellent reliability and long engine lives, others complained of overheating, frequent blowing of head gaskets, cylinder head cracks (cracks between the valve seats are common and do not represent danger if the cracks do not exceed specifications), premature wear of the bottom and top end bearings, low oil pressure etc.[citation needed]
A poorly maintained cooling system could also lead to overheating and, especially with the higher stressed turbo engines, head gasket problems. The head gasket problem has been treated with the adoption of a multi-layer steel head gasket which replaces the fiber one.
The camshaftdrive belt also required changing at the recommended intervals, which was a pretty involved job, not least because of poor access in the under-floor engined LT vans, and the necessity of special (and expensive) locking tools to carry out the replacement, which have always been scarce and are becoming increasingly difficult to obtain.[3]
The top end also featured adjustable tappets using the bucket and shim arrangement, and required checking every 25,000 miles (40,000 km), although later (1990–) models had self-adjusting hydraulic tappets.
In many cases however, engines that have been looked after properly and treated with mechanical sympathy, have been known to clock up 500,000 - 600,000 miles. This engine is particularly sensitive to being thrashed from cold, it is important to go gently until warmed up, and to avoid short journeys which will exacerbate rapid engine wear.
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This article relies largely or entirely on a single source Relevant discussion may be found on the talk page Please help improve this article by introducing citations to additional sources Find sources Volkswagen D24 engine news newspapers books scholar JSTOR July 2009 The Volkswagen D24 engine is a 2 4 litre inline six cylinder R6 I6 naturally aspirated diesel engine formerly manufactured by Volkswagen Group from 1978 to 1995 1 D24D24 engine bay of a 1990 Volvo 240OverviewManufacturerVolkswagen GroupProduction1978 1995LayoutConfigurationinline row 6 cylinder R6 I6 diesel engineDisplacement2 383 cc 145 4 cu in Cylinder bore76 5 mm 3 01 in 1 Piston stroke86 4 mm 3 40 in Cylinder block materialgray cast iron 7 main bearings 1 Cylinder head materialcast aluminium alloy 1 Valvetrain12v belt driven single overhead camshaft SOHC 1 Compression ratio23 5 1CombustionFuel systemBosch mechanical distributor injection pump indirect fuel injection 1 Fuel typedieselOil systemwet sump 1 Cooling systemwater cooled timing belt driven water pump 1 OutputPower output82 hp a 4800 rpm DIN Torque output14 3 kpm at 2800 rpmDimensionsDry weight182 kgChronologySuccessorVolkswagen D24 engineSubsequent forced induction variants of this engine were also available as the Volkswagen D24T engine with a turbocharger and a turbo intercooled version the Volkswagen D24TIC engine These turbocharged variants resulted in higher power and torque outputs 1 Contents 1 Technical description 2 Applications 3 Operational experience 4 See also 5 References 6 External linksTechnical description EditAll variants naturally aspirated and forced induction displace 2 383 cubic centimetres 145 4 cu in from a cylinder bore of 76 48 millimetres 3 01 in and a piston stroke of 86 4 millimetres 3 40 in Its inline six cylinder block is constructed from grey cast iron and has seven main bearings to support the die forged steel crankshaft The cast aluminium alloy cylinder head contains two valves per cylinder each with two concentric valve springs and shim adjustable bucket tappets The valves are opened via a timing belt driven single overhead camshaft SOHC and the combustion chamber compression ratio is 23 0 1 Attached to the cylinder head is a cast aluminium alloy intake manifold on one side and two cast iron exhaust manifolds on the same side it s a non cross flow engine one manifold for three cylinders followed by a two in one exhaust pipe system The fuel system uses a Bosch mechanical distributor type Bosch VE type injection pump which feeds indirect fuel injection into a remote whirl pre combustion chamber The cooling system is composed of a timing belt driven water pump an 87 C thermostat in the engine block itself The thermostat receives coolant from the engine block and from a bypass running from the engine head This system allows a very accurate opening and closing operation avoiding thermal shocks and big coolant temperatures amplitude The initially available variant of the D24 produced a DIN rated power output of 55 kilowatts 75 PS 74 bhp at 4 500 rpm and it generated a torque of 155 newton metres 114 lbf ft at 2 800 rpm 1 Subsequent minor updates and revisions resulted in differing power and torque ratings D24 models ID s DIN rated max powerat rpm max torqueat rpm redline rpm years1S ACT 2 51 kW 69 PS 68 bhp at 3 400 145 N m 107 lbf ft at 1 600 1 800 1988 1995CP DW 1 55 kW 75 PS 74 bhp at 4 000 155 N m 114 lbf ft at 2 800 1978 1992Volkswagen D24 60 kW 82 PS 80 bhp at 4 800 140 N m 103 lbf ft at 2 800 1978 1990Volkswagen D24 58 kW 79 PS 78 bhp at 4 700 140 N m 103 lbf ft at 2 400 1991 1993Volkswagen D24 T without intercooler 80 kW 109 PS 107 bhp at 4 800 205 N m 151 lbf ft at 2 500 1983 1991Volkswagen D24 TIC with intercooler 90 kW 122 PS 121 bhp at 4 800 235 N m 173 lbf ft at 2 400 max rpm 5200 rpm before fuel cut 1986 1995The weight of this engine is 182 kg or 401 lbs Applications EditThe D24 was fitted in the Volkswagen LT range from Volkswagen Commercial Vehicles with factory production from August 1978 to December 1995 1 Specific dates of the variants CP 08 78 11 82 DW 12 82 07 92 1S 08 88 07 92 ACT 08 92 12 95 1 The D24 was also found in a number of Volvo models specifically the 240 740 and 940 and it was coupled to Volvo ZF Automatic Aisin Warner AW55 Automatic Borg Warner BW55 M45 M46 overdrive or M47 M47 II and M90 transmissions The D24 also found use in military vehicle applications It was used in the Steyr Daimler Puch Pinzgauer High Mobility All Terrain Vehicle 716 amp 718 models in its turbocharged variant the D24T Operational experience EditThis section possibly contains original research Please improve it by verifying the claims made and adding inline citations Statements consisting only of original research should be removed July 2009 Learn how and when to remove this template message In service the unit proved to be a somewhat mixed bag some owners reported excellent reliability and long engine lives others complained of overheating frequent blowing of head gaskets cylinder head cracks cracks between the valve seats are common and do not represent danger if the cracks do not exceed specifications premature wear of the bottom and top end bearings low oil pressure etc citation needed A poorly maintained cooling system could also lead to overheating and especially with the higher stressed turbo engines head gasket problems The head gasket problem has been treated with the adoption of a multi layer steel head gasket which replaces the fiber one The camshaft drive belt also required changing at the recommended intervals which was a pretty involved job not least because of poor access in the under floor engined LT vans and the necessity of special and expensive locking tools to carry out the replacement which have always been scarce and are becoming increasingly difficult to obtain 3 The top end also featured adjustable tappets using the bucket and shim arrangement and required checking every 25 000 miles 40 000 km although later 1990 models had self adjusting hydraulic tappets In many cases however engines that have been looked after properly and treated with mechanical sympathy have been known to clock up 500 000 600 000 miles This engine is particularly sensitive to being thrashed from cold it is important to go gently until warmed up and to avoid short journeys which will exacerbate rapid engine wear See also EditList of Volkswagen Group diesel engines List of discontinued Volkswagen Group diesel engines Wasserboxer List of Volvo enginesReferences Edit a b c d e f g h i j k l m ETKA clarification needed Betriebsanleitung Volkswagen LT deutsch 7 89 901 551 280 00 UpShift Volvo 740 Turbodiesel http www upshiftblog com 2011 06 1985 volvo 740 turbodiesel volkswagen html http www volvoclub org uk press pdf 240DieselPressRelease1978 pdfExternal links EditVolkswagen Group corporate website Chemnitz Germany engine plant Mobility and Sustainability Kassel Germany engine plant Mobility and Sustainability Salzgitter Germany engine plant Mobility and Sustainability Polkowice Poland engine plant Mobility and Sustainability Sao Carlos Brazil engine plant Mobility and Sustainability Shanghai China engine plant Mobility and Sustainability http www volvoclub org uk press pdf 240DieselPressRelease1978 pdf Retrieved from https en wikipedia org w index php title Volkswagen D24 engine amp oldid 1158326415, wikipedia, wiki, book, books, library,
