Electronic Fuel Injection Control System - SELVA MARINE Blue Whale 250 EFI Service Manual

Electronic fuel injection control system

In the Blue Wlale 250 engine, the electronic fuel injection control system controls the fuel injection tim-
ing and volume. Maximum output, low fuel consumption, and low emissions are achieved by main-
taining the optimum air-fuel ratio under various engine operating conditions.
Fuel injection control
Description
Injection timing
Injection volume
Asynchronous
injection
6P23H11
Control
Simultaneously injects into cylinder groups
#1 and #4, #2 and #5, and #3 and #6.
Sequential injection in order of cylinders #1,
#2, #3, #4, #5, and #6.
Controls the operation time of the injectors
according to the atmospheric pressure and
intake air temperature.
Controls the operation time of the injectors
according to the atmospheric pressure,
intake air temperature, and engine tempera-
ture.
Stops injection.
Simultaneously injects into all cylinders to
prevent a lean air-fuel ratio.
Feature and benefit
Engine condition
Starting
Normal operation
From cranking to starting
Normal operation
Turned off
Accelerated operating
speeds
1-22
1
2
3
4
5
6
7
8
9