KMS MD35, Руководство пользователя

Страница: 4 / 75

KMS MD35 manual
Version 4.16 4
1 KMS (Kronenburg Management Systems)
Kronenburg Management Systems (KMS) is a complete line of programmable engine control units
(ECU), that offers you an extremely reliable and user-friendly system at a very competitive price. It
gives you the possibility to manage all turbo and naturally aspirated Otto engines (engines in which
the fuel mix is ignited via a spark plug) up to 12 cylinders.
An engine control unit is a type of electronic control unit that determines the amount of fuel,
ignition timing and their parameters which are needed to keep an internal combustion engine
running. It does this by reading values from multidimensional maps which contain values calculated
by sensor devices monitoring the engine.
The programmable KMS ECU doesn‟t not have a fixed behaviour, but can be (re)programmed by the
user. Programmable ECU‟s are required when a significant modification has been made to a vehicle's
engine. For example adding a turbocharger, changing the camshaft profile or a conversion to an
alternative fuel. In these situations, a programmable KMS ECU can be wired in. The KMS ECU‟s can
be programmed/mapped with a computer connected using a serial or USB cable, while the engine is
running.
The programmable ECU controls the amount of fuel to be injected and the ignition moment for each
cylinder. This varies depending on the engine's RPM and the position of the throttle valve and/or the
Manifold Absolute Pressure (MAP). This can be adjusted by bringing up a spreadsheet page on the
screen where each cell represents an intersection between a specific RPM value and a throttle
position. In this cell a value corresponding to the amount of fuel injected can be entered. This
spreadsheet is referred to as a fuel table or fuel map. The same way the ignition spreadsheet can
be setup.
By modifying these values while monitoring the exhaust gas composition (best way is using a wide
band lambda sensor) you can see if the engine runs rich or lean. This way you can find the optimal
amount of fuel and optimal ignition moment needed for all possible combinations of RPM and
throttle position/manifold absolute pressure. This process can be best carried out at a
dynamometer, giving a controlled environment (without influence from outside) to work in. An
engine or chassis dynamometer gives a more precise calibration for your (racing) applications.
The KMS MD35 ECU offers a complete self learning air fuel ratio control (lambda control) for most
common
types of oxygen sensors (broadband/narrow band).
In addition to lambda control, this management system also provides the following functions: load-
dependent boost pressure control, water injection control, (variable) launch control, power-
shifting, (variable) A.L.S., staged/banked injection, mapselector, odd fire, idle control, rpm
limiters, engine diagnostics, 4mb datalogging, etc.
This management system can be used as an independent injection/ignition system for virtually all
types of Otto engine, but can also be used in combination with a standard engine management
system. It can take over the standard injection/ignition at any desired engine speed, boost pressure
or throttle valve position. Precise ignition and air/fuel mixture control leads to excellent drive-
ability and low fuel consumption.
We advice to read the manual complete before starting. The set-up of the system software is kept
as clear and simple as possible, so that even people with little computer experience will be able to
use this system. Working with the software is simple, but if the settings are incorrectly configured,
there is a serious risk of engine damage. In this manual there are warning signs and notes that
need your extra attention to bring this setup to a good end. We recommend you leave the
programming to specialists.