113
Fig.162
The following accessories and engine air filter are installed on the upper body of throttle valve.
·
fuel
system pipe and fuel return pipe
·
fuel pressure regulator
·
bottom-supplying fuel injector IWM
·
intake
air temperature sensor.
——Fuel pressure regulator
As engine is running, fuel pump supplies fuel (fuel supply volume of pump is about 80L/h) through
filter and pipe to fuel pressure regulator (chart 137). The regulator is designed to keep the specified fuel
pressure at 1bar(0.9-1bar), and redundant fuel will recirculate flowing into fuel tank. Fuel will clean and
cool injector during recirculation.
——Working procedure of Fuel pressure regulator.
Spring (2) applies pressure on the diaphragm (7) connected to sealing valve (6) keeping cavum closed
between fuel delivery pipe and fuel return pipe (4).
When fuel pressure in pipe (3) exceeds 1 bar, pressure on diaphragm (7) will overcome spring (2)
resistance, then diaphragm goes up raising sealing valve up to allow redundant fuel to flow back and
returns to proper work pressure.
During producing, fuel pressure regulator pressure is calibrated by socket head bolt and will never
changed under any circumstance. ——Fuel injector
Содержание JNSZ1600QL
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Страница 76: ...75 Replace the sealing gasket of drain plug Screw in the drain plug by hand and tighten to 21 25Nm...
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Страница 138: ...137 Outline Drawing of 5T15 Transmission...
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