JaMS-236

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Yaroslavsky Motorny Zavod
JaMS-236

JaMS-236
JaMS-236
Production period: since 1960
Manufacturer: Yaroslavsky Motorny Zavod
Working principle: diesel
Motor design: 90 ° V6
Valve control: OHV
Drilling: 130 mm
Hub: 140 mm
Displacement: 11,150 cm 3
Mixture preparation: Direct injection
Engine charging: free sucking / charged
Cooling system: Water cooling
Lubrication system: Wet sump lubrication
Emission standard: no
Previous model: YesAS-204
Successor: JaMS-530

The ЯМЗ-236 , German transcription JaMS-236 , in Eastern Europe occasionally JaMZ-236 , internationally also YaMZ-236 , is a six-cylinder industrial diesel engine manufactured by the former Soviet and now Russian manufacturer Jaroslawski Motorny Sawod (JaMS). It is one of the smaller modular motors from JaMS; The V8 engine JaMS-238 and the V12 engine JaMS-240 are structurally similar . The engine is mainly used in medium-sized commercial vehicles.

Model

There are different types of the JaMS-236 engine, which are referred to in Russian as Модификации , in English "modifications". Originally only a free suction type was planned, later other types were added. They are marked with suffixes: K (K) denotes the purpose in combine harvesters, Е (Je) an exhaust-gas-cleaned model; Н (N) and Б (B) identify an exhaust gas turbocharger. The suffix М (M) indicates a modernization of an established model. Numbers can also be added as suffixes, so that there are a large number of models. The following is a list of the most common basic types:

  • ЯМЗ-236 (JaMS-236): basic model from 1960, free suction, 132 kW
  • ЯМЗ-236Н (JaMS-236N): with exhaust gas turbocharger, 169 kW
  • ЯМЗ-236Б (JaMS-236B): with exhaust gas turbocharger, 184 kW
  • ЯМЗ-236Г (JaMS-236G): free suction, 110 kW
  • ЯМЗ-236Д (JaMS-236D): free suction, 129 kW
  • ЯМЗ-236ДК (JaMS-236DK): free suction, 136 kW

technical description

The JaMS-236 is a wet sump-lubricated and water-cooled six-cylinder engine with OHV valve control and direct injection that works according to the diesel process . It is V-shaped with a fork angle of 90 °. The firing order is 1-4-2-5-3-6. With a cylinder bore of 130 mm and a piston stroke of 140 mm, the engine has a displacement of 11.15 dm³.

Engine block

The engine block has a timing case with spur gears on its front and the flywheel on the back . It is a casting made from a special cast - a steel alloy. It includes both cylinder banks and the upper part of the crankcase. The oil pan forms the lower end of the crankcase, the oil pump is built into the oil pan on the timing case side of the engine. The starter motor is flanged to the flywheel housing on the left-hand side of the motor; an oil feed pump is installed behind the starter motor on the control housing side.

Control housing and auxiliary units

The drive gear for the oil pump, an intermediate gear, the crankshaft gear, the drive gear of the camshaft, the fuel pump drive gear, the fan drive gear and, at the very top, the drive gear of the injection pump are mounted in the control housing from bottom to top. A belt pulley is installed on the crankshaft in front of the crankshaft gear, via which the oil feed pump is driven. The fuel pump is installed above the control housing and is driven by the fuel pump wheel via a belt pulley and a V-belt. The injection pump is a conventional in- line injection pump with a mechanical all-speed controller and is installed between the cylinder banks; it is driven by the spur gears mentioned in the timing case. The fan is driven directly by the fan wheel mounted on the fan shaft. The electric generator is mounted on a cast holder in front of the injection pump and is driven by a belt pulley on the fan shaft via a V-belt. Fuel filters and oil filters are attached to the left and right of the fuel pump.

Crank drive

The crankshaft is made of forged steel, thermally hardened and has four bearings. The crankshaft bearings are made of steel and have an anti-friction layer made of lead bronze . Two connecting rods are hinged next to each other for each crank pin; The connecting rods have recesses (so-called I-shaft connecting rods) and are made of steel in order to minimize moving masses. The pistons are made of aluminum and have floating piston pins made of steel. The combustion bowl in the piston is omega-shaped. Three compression rings and two oil control rings are installed per piston as standard.

Cylinder heads

The engine has a cylinder head for each cylinder bank, i.e. a total of two cylinder heads. The cylinder heads are cast parts made of special cast iron - a cast iron alloy - and constructed according to the cross-flow principle . The engine has an exhaust manifold for each cylinder head; the exhaust manifolds are flanged to the outside of the cylinder heads. The engine has a common intake manifold for both cylinder heads, which is mounted between the two cylinder heads. The intake air filter sits in the middle of the intake manifold.

Valve train

The camshaft is installed centrally above the crankshaft in the engine block; it is driven directly by the crankshaft via the aforementioned spur gear. It operates the hanging valves via tappets, push rods and rocker arms. The JaMS-236 has an inlet valve with a diameter of 61.5 mm and an outlet valve with a diameter of 48 mm for each cylinder.

Technical specifications

Technical data as of 1968
Parameters JaMS-236
Working method Diesel, four-stroke
Firing order 1-4-2-5-3-6
Suction sucking free
Bore × stroke 130 mm × 140 mm
Displacement 11.15 dm 3
rated capacity 132 kW at 2100 min -1
maximum torque 657 N · m at 1500 min -1
Minimum speed 450-550 min -1
Maximum speed 2225-2275 min -1
Lowest specific fuel consumption 238 g / kWh
Compression ε 16.5
Injection pressure 14.7 MPa
length 1020 mm
width 1006 mm
height 1195 mm
Dimensions 880 kg
source
Speed ​​diagram

source

Web links

Commons : JaMS-236  - Collection of pictures, videos and audio files

Individual evidence

  1. ↑ Jaroslawski Motorny Sawod (Ed.): Двигател ЯМЗ-236Н , accessed on April 17, 2020
  2. ↑ Jaroslawski Motorny Sawod (Ed.): Двигател ЯМЗ-236Б , accessed on April 17, 2020
  3. ↑ Jaroslawski Motorny Sawod (Ed.): Двигател ЯМЗ-236Г , accessed on April 17, 2020
  4. ↑ Jaroslawski Motorny Sawod (Ed.): Двигател ЯМЗ-236Д , accessed on April 17, 2020
  5. ↑ Jaroslawski Motorny Sawod (Ed.): Двигател ЯМЗ-236ДК , accessed on April 17, 2020
  6. ↑ a b G. D. Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 5
  7. ↑ a b c d e G. D. Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 7
  8. ↑ a b c d e G. D. Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 16
  9. ↑ GD Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 15
  10. ↑ a b G. D. Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 41
  11. ↑ GD Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 140
  12. ↑ GD Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 3
  13. ^ GD Chernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 4
  14. ↑ GD Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 14
  15. ↑ GD Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 31
  16. ↑ GD Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 33
  17. ↑ a b G. D. Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 6
  18. ↑ a b G. D. Tschernyshev (ed.): ДВИГАТЕЛИ ЯМЗ-236, ЯМЗ-238 , Verlag "Maschinenbau", Moscow 1968, p. 9