SELVA MARINE Kingfish 25, Руководство по обслуживанию

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2-6
2
Cold and warm engine ignition timing control
The ignition timing is corrected as shown in the following graph according to the engine cooling
water temperature.
a
Ignition timing correction (degree)
b
Cooling water temperature (°C [°F])
c
Basic ignition timing
Control-starting condition Corrected ignition timing
–20 °C (–4 °F) or more and 10 °C (50 °F) or
less
BTDC 5 degrees
More than 10 °C (50 °F) and less than 30 °C
(86 °F)
Returns from BTDC 5 degrees to the basic
ignition timing
30 °C (86 °F) or more and 70 °C (158 °F) or
less
Basic ignition timing
More than 70 °C (158 °F)
Corrected from the basic ignition timing to
ATDC 5 degrees
–6.0
–20
(–4)
10
(50)
30
(86)
50
(122)
60
(140)
70
(158)
90
(194)
–5.0
–4.0
–3.0
–2.0
–1.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
a
b
c
Ignition control system