M20 Stroker Engine Design for Improved Performance

[Document title]
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[COMPANY NAME] | [Company address]
[DOCUMENT SUBTITLE]
AGRIPPINA
[Year]

EXECUTIVE SUMMARY
This report seeks to describe the background and operation of the M20 stroker for the BMW
automobile race car. The report determines the engine design for improved performance. The
report has been drafted following a request by the engine development company on the upgrade
of the stroker version of the M20 baby-six engine. The upgrade uses the same components for
the engine design but each part is designed to result in either higher speeds or better use of fuel.
The report uses the MATLAB software for analysis and the computation section is defined using
the dynamic analysis. The initial section of the report seeks to provide a proper overview of the
M20 stroker by defining the functions of the different components that make up the system. The
engine design company has tasked us with a number of problems to solve. We need to solve each
of the problems with the available resources and using the same changes system payload
parameters. The management requires us to determine which connecting rod length is
appropriate for the M20 out of a number of options. They also require that we determine the
maximum side loading that is appropriate for the piston and cylinder wall. The analysis section
seeks to express the change in length with regards to the dramatic change based on the maximum
force at the gudgeon pin.
The designers require the team to determine the most suitable connecting rod length to determine
the effective velocity and acceleration of the piston for the different cycles and baby six engine.
The super eta engine seeks to operate at 700 revolutions per minute while recommending a
maximum rpm built at 2.5i and M3 rods. The paper uses graphical illustrations to output the
results of the system based on the analysis of the internal combustion engine.
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INTRODUCTION
The car industry has progressed from using steam propellers to using the internal combustion
engine. With the advent need for green economies and the conservation of the environment, the
car industry is thinking of the next model of cars to ensure that they use renewable energy and
they do not pollute the environment. Currently, the best the car industry can achieve is to
improve the efficiency while reducing the pollution. Due to their high use of vehicles shortage or
fuel and rise in cost was eminent. So, the BMW upgraded their engine from a M20 to a more
efficient version. They named the project as ‘Super Eta’. The engineers decided to increase the
2.5l engine’s stroke from 75mm to 8mm. As the first design the engine was built to produce high
torque. But for the new ‘Super Eta’ Project the designs were required to produce low torque of
4800RPM. The vehicle needs a higher revving and large capacity engine that provides more
power. The M20, like the M10, is fairly well tuned from the factory.
There is not a lot of hidden horsepower just waiting for you to tease out. There are a few things
that can be done to make the engine run better and make a little more power, on the order of 5 to
10 percent at the wheels. The piston main function is to determine the thermal energy created by
the ignition of the fuel and the air which the system transforms into the linear motion. The linear
motion seeks to act on the crankshaft journal and becomes rotary motion. The piston is made up
of the domed, flat top, recessed valve reliefs, and the dished piston heads that form the crown of
the internal combustion engine. The piston pin is offset toward the major thrust surface. The
engine rotation and rod angle during the power stroke causes the engine to press harder against
one side of the cylinder so as to create the major thrust surface. The clockwise-rotating engine is
viewed from the front of the engine while the major thrust surface is on the side.
The connecting rod may be designed to utilize the spit holes or the bleed host. They are made of
the cast iron whose form is of the general duty or the forged steel which provides a stronger and
heavier version of the connecting rod. The connecting rod is one of the most stressed
components of the engine. The combustion forces tend to compress it and when the piston stops
at the top of the cylinder, inertia forces try to pull it apart. The connecting rods are designed with
balancing bosses or pads on each end of the rod. The rod caps are unidirectional and they have to
be reinstalled in the same rod position. The chamfered side of the bore leads towards the
crankshaft side on the baby-six engine.
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