Bf-109 K-4 overheating

[Roland_HUNter]

Greetings!

Based on the specs
Water rated temperature in engine output: 100..102 °C
Water maximum temperature in engine output: 115 °C
The K-4 water rad should boiling at 115 °C.

I tested it with DB and DC engine, and the water start boiling at 110 °C.

Please investigate it.

PS:
Other 109s are start boiling at 115 °C.

Thank you!

[LukeFF]

You need to post track files that show exactly what happened, at a minimum. Plus, you made no mention of altitude, weather conditions, engine settings, etc.

[the_emperor]

tested at Kuban Autumn at 500m, weather clear

rad control to manual to force overheating

though irrelevant as max temps are not tight to an engine setting, testes at combat/climb 30min setting 2600rpm in level flight

 

overheating occurs at 110°C

(limit is 115°C for 10min 0-5.5km altitude, overheating should occur at 116°C, for the later DB605a)

Edited June 27, 2023 by the_emperor

[Kurfurst]

From DB 605 DB/DC Motorenkarte, cooling limits.

 

118-117 Celsius exit temperature is permissible for up to 10 minutes (0-4 km) with MW 50 operation

112-109 Celsius exit temperature is permissible continuously (0-14 km) with MW 50 operation

[Roland_HUNter]

12 hours ago, LukeFF said:

You need to post track files that show exactly what happened, at a minimum. Plus, you made no mention of altitude, weather conditions, engine settings, etc.

Kuban Spring
300 meter
Closed rads.

Tracks.rar

[LukeFF]

Alright, I'll pass along the message and see what the response is. ?

[Roland_HUNter]

On 6/27/2023 at 6:14 PM, LukeFF said:

Alright, I'll pass along the message and see what the response is. ?

E-7:
Water rated temperature in engine output: 94 °C
Water maximum temperature in engine output: 100 °C
Oil rated temperature in engine intake: 30..75 °C
Oil maximum temperature in engine intake: 80 °C
Oil rated temperature in engine output: 95 °C
Oil maximum temperature in engine output: 105 °C

Water start boiling at 115 °C+