Functional Description - Bosch EPS 205 Originalbetriebsanleitung

en 50 | EPS 205 | Product description
3.6.17 Sealing plug for leak test
The sealing plug included in the scope of delivery is
required for performing the daily leak test. The sealing
plug has two threads (M12 and M14) and is screwed
onto the connection adapter.
!
The sealing plug must be tightened to a torque of
between 25 Nm and 30 Nm.
3.6.18 Guard
DHK/UI, CRI Piezo and CRI/CRIN testing can only be
performed with the guard closed. If the guard is opened
during the test, the test is terminated immediately and
must be re-started.
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1 689 989 185 2018-03-24
3.7

Functional description

The EPS 205 is a compact unit containing all the
components, such as high-pressure pump for pressure
generation, test oil tank, flowmeter, measurement PCB,
computer PCB and LCD with touch screen, required for
testing CRI/CRIN, CRI Piezo and DHK/UI. Use is made
of a high-pressure pump and a high-pressure rail to
build up the pressure needed for test purposes. The
high-pressure pump is responsible for conveying the
test oil and the high-pressure rail with pressure control
valve regulates the necessary pressure. The DHK/UI,
CRI/CRIN and CRI Piezo are connected by way of a
high-pressure hose and a connection adapter. The CRI/
CRIN and CRI Piezo are additionally actuated by way of
an adapter cable.
CRI/CRIN, CRI Piezo and DHK/UI testing can only be
performed with the guard closed. The safety circuit of
the guard immediately interrupts the test procedure on
opening the guard and reduces the test oil pressure to
<8 MPa.
The built-in two-chamber test oil tank has a capacity
of roughly seven liters. Coarse impurities are collected
in the first chamber. In the second chamber the
test oil is set to the correct test temperature. The
EPS 200 system software permits checking of the most
important functions such as opening pressure 1 and
2, chatter, assembly leakage, seat leakage and spray
pattern for DHK/UI. Illumination of the inside of the
jet chamber permits assessment of the DHK/UI spray
pattern. When checking the DHK/UI spray pattern, the
internal extraction controller (Fig.1, item 7) ensures
that as little of the test oil vapor as possible escapes.
Leak testing is performed for CRI/CRIN and CRI Piezo
and the injected fuel quantity and return quantity can
be measured at full load and with no load.
Robert Bosch GmbH