Product Description; Intended Use; Comparison Of The "Kma" And "Glass" Measuring Technology; Wetting - Bosch KMA 802 Manual Original

3.

Product Description

Please comply with the instructions in the operating
manual for the injection-pump test bench.
3.1

Intended use

KMA (CMA) stands for Continuous Measuring Analysis.
It is designed to test and adjust diesel-fuel injection
pumps up to 12 cylinders in conjunction with an injec-
tion-pump test bench.
3.2 Comparison of the "KMA" and
"Glass" measuring technology
3.2.1

Wetting

The "glass measuring technology" involves determining
the volume of test oil sprayed in a graduated measuring
glass. When the measuring glasses are emptied, a test
oil residue remains in the measuring glass. This residue
is known as the measuring-glass wetting.
The "KMA measuring technology" involves continuously
measuring the sprayed-off test oil, i.e. the measure-
ments determined by the KMA are reduced by the quan-
tity of the measuring-glass wetting without the correc-
tion factor.
3.2.2

Temperature differences

In the case of the KMA measuring system, the test oil
to be measured is supplied to the measuring system
much more quickly. In contrast to the "glass measu-
ring technology", the temperature may differ when the
measurements are read. This would result in quantitati-
ve differences.
However, in order to be able to use the same test va-
lues and adjustment values as in the "glass measuring
technology" system, the computer takes account of the
measuring-glass wetting and temperature difference. As
a result, the measurements displayed on the monitor
are comparable with the "glass measurements".
3.2.3

Fluctuations in the injection-pump flow rate

In a continuous measuring system such as KMA measure-
ments are performed very quickly. As a result, the flow rate
may fluctuate for several "critical" injection pumps.
In the "glass measuring technology" system this fluctuation
effect is averaged over a long measurement period (e.g.
1000 strokes).
In the case of the KMA, some critical injection pumps
should preferably be measured on a long-term basis,
otherwise the flow rate cannot always be adjusted pre-
cisely (display constantly changes).
Robert Bosch GmbH
Product Description | KMA 802/822 | 25
3.3

Scope of delivery

Designation
Measuring device
PC protective casing
Trolley
Console with fitting accessories
Retaining strip for monitor
Carrier plate
Monitor with accessories
Power supply cable
RS-232 connecting lead (8 m)
RS 232 connecting lead (3 m)
RS 232 connecting lead (0.75 m)
Multi-socket outlet
Connection accessories
Order number:
1)
KMA 802 = 0 683 802 001
KMA 822 = 0 683 822 001
Pre-assembled. in trolley.
2)
i
For operations on the KMA 802 or the KMA 822, a
PC is also required. This PC is an optional accessory
and contains the EP software package.
3.4

Special accessories

Designation
Printer
USB connecting cable (1 m) for printer
PC with EP software package
PC retrofit kit for test set VPM 844
(prerequisite: PC 1 687 022 958 or
1 687 023 655)
Connection set
(4 item quick coupling connection)
for additional PDHK (test nozzle-holder as-
sembly) with
thread M 20 x 1.5
(Type I, II, III, IV, VII, VIII, IX)
1 item per additional PDHK
required.
Connection set
(4 item quick coupling connection)
for PDHK with thread M 22 x 1
(Type T- nozzles)
1 item per PDHK required.
In-line filter insert (6 item)
(Damping unit – valve block)
Information on special accessories can be obtained from your
1)
authorized Bosch dealer.
en
KMA
1)
802 822
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Ordering number
On request
1)
1 684 465 491
On request
1)
1 687 001 949
1 687 010 089
1 687 010 088
1 687 001 509
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1 689 979 674 2013-12-23