Vehicle powertrain mounting system and method
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Abstract
In July of 2004 KTH Racing will attend at the Formula Student event in England. The Formula Student event is a competition between schools that has built their own formula style race cars according to the Formula SAE rules. In January of 2004 the Formula Student project started at KTH involving over seventy students. The aim of this thesis work is to design the suspension and steering geometry for the race car being built. The design shall meet the demands caused by the different events in the competition. The design presented here will then be implemented into the chassis being built by students participating in the project. Results from this thesis work shows that the most suitible design of the suspension is a classical unequal length double A-arm design. This suspension type is easy to design and meets all demands. This thesis work is written in such a way that it can be used as a guidebook when designing the suspension and steering geometries of future Formula Student projects at KTH.
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Citations
24 Claims
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1-8. -8. (canceled)
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9. A vehicle powertrain mounting system comprising:
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a) a vehicle powertrain including a vehicle engine;
b) a first magnetorheological (MR) hydraulic mount operatively connecting the vehicle powertrain to a vehicle weight-supporting member, wherein the first MR hydraulic mount is disposed to carry load and is disposed to react vehicle engine torque during changes in rotational speed of the vehicle engine, and wherein the first MR hydraulic mount includes a first electric coil; and
c) a controller which controls electric current to the first electric coil, wherein the controller supplies electric current to the first electric coil based upon determining bounce of the vehicle engine and based upon determining a change in rotational speed of the vehicle engine. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method for controlling a magnetorheological (MR) hydraulic mount of a vehicle powertrain mounting system for a vehicle powertrain including a vehicle engine, wherein the MR hydraulic mount operatively connects the vehicle powertrain to a vehicle weight-supporting member, wherein the MR hydraulic mount is disposed to carry load and is disposed to react vehicle engine torque during a change in rotational speed of the vehicle engine, wherein the MR hydraulic mount includes an electric coil, and wherein the method includes the steps of:
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a) supplying electric current to the electric coil based upon determining bounce of the vehicle engine; and
b) supplying electric current to the electric coil based upon determining a change in rotational speed of the vehicle engine. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification