Volvo D11 series, Installation Manual

Page: 83 / 212

Cooling system
8
Temperature increase (
∆
T
B – E
) across the seawater circuit
of the engine including reverse gear oil cooler at nominal power.
Engine Rating
∆
T
B – E
according to figure on pages 78 - 79
°C (°F)
D5A T, 900 rpm 8–0 (5–8)
2300 rpm 7–9 (3–7)
900 rpm 2 0–2 (8–22)
2300 rpm 2 9– (7–20)
D5A TA,900 rpm 9– (7–20)
2300 rpm 9– (7–20)
900 rpm 2 0–2 (8–22)
2300 rpm 2 0–2 (8–22)
D7A T, 900 rpm –3 (20–24)
2300 rpm –3 (20–24)
900 rpm 2 2–4 (22–26)
2300 rpm 2 –3 (20–24)
D7A TA,900 rpm 2–4 (22–26)
2300 rpm 3–5 (24–27)
900 rpm 2 4–6 (26–29)
2300 rpm 2 5–8 (27–33)
D7C TA,900 rpm 4–6 (26–29)
2300 rpm 3–5 (24–27)
900 rpm 2 6–9 (29–35)
2300 rpm 2 6–9 (29–35)
D9 (22 kW) 0–2 (8–22)
D9 (26 kW) 800 rpm 3–5 (24–27)
D9 (26 kW) 2200 rpm 2–4 (22–26)
D9 (33 kW) 2-3 5–8 (27–33)
D9 (368 kW) 4 7–9 (3–35)
D9 (425 kW) 5 20–24 (36–44)
D (493 kW) 5 2–25 (38–45)
D2 (294 kW) –3 (20–24)
D2 (33 kW) 3–5 (24–27)
D2 (405 kW) 2 7–20 (3–36)
D2 (452 kW) 3 5–8 (27–33)
D2 (478 kW) 4 6–9 (29–35)
D2 (496 kW) 5 6–9 (29–35)
D2 (55 kW) 5 3–6 (24–29)
D2 (525 kW) 5 5–8 (27–33)
D2 (570 kW) 5 7–20 (3–36)
D6 (363 kW) n.a. n.a.
D6 (404 kW) n.a. n.a.
D6 (44 kW) n.a. n.a.
D6 (478 kW) n.a. n.a.
D6 (55 kW) 2 n.a. n.a.
Minimum seawater flow at different engine speed
• Lower flow than recommended causes insufficient cooling performance.
• Higher flow than recommended causes cavitation in the heat exchangers and pipes.
See
Sales Guide Marine Propulsion Diesel Engines
for each engine type and rpm.