General Information

Brief Technical Specifications of Diesel Engines

~1min read
Parameter JPA JP JP SB 1V
Number of cylinders 4 4 4 4 4
Cylinder bore, mm 76,5 76,5 76,5 76,5 76,5
Piston stroke, mm 86,4 86,4 86,4 86,4 86,4
Displacement, cm3 1600 1600 1600 1600 1600
Compression ratio 23 23 23 23 23
Minimum cetane number of diesel fuel 45 45 45 45 45
Rated power kW (hp)/ crankshaft speed, rpm 40(54)/ 4800 51(70)/ 4500 59(80)/ 4500 59(80)/ 4500 44(60)/ 4500
Maximum torque, N·m / crankshaft speed, rpm 100/ 2500 133/ 2500 155/ 2600 155/ 2600 110/ 2400
Firing order 1–3–4–2 1–3–4–2 1–3–4–2 1–3–4–2 1–3–4–2
Intake valve timing:
– opening before TDC 5* 5* 7 7 7
– closing after BDC 13° 13° 14° 14° 14°
Exhaust valve timing:
– opening before BDC 27° 27° 27° 27° 26°
– closing after BDC 5° 5° 7° 7° 7°
Start of fuel injection before TDC, mm
– nominal 0,9 ±0,07 0,9 ±0,07 1,0 ±0,0 0,9 ±0,07 1,0 ±0,0
– adjustment value 0,9 ±0,02 0,9 ±0,02 1,0 ±0,02 0,9 ±0,02 1,0 ±0,02
Idle crankshaft speed, rpm 850 ±100 850 ±100 850 ±100 850 ±100 850 ±100
Maximum crankshaft speed, rpm 5350 ±50 5100 ±50 5100 ±100 5100 ±100 5350 ±100
Turbocharger availability no yes yes yes yes
Charge air intercooling no no yes yes no
Catalytic converter availability no no no no yes

* From 08.1985, due to the introduction of hydraulic valve lifters, valve timing changed and became the same as the 1V engine.

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