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Help to Improve Design A mechanical Drive Swicthing Circuit

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blooz

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Hai
this is Hybrid vehicle drive Shift System/Monitor

the folowing is the requirement

1.there will be two drives for the vehicle one electric and other diesel

2.Electric drive is used to start and When the Speed reaches a particular value the drive must shift that is motor Should be off ..and Diesel Should be
started by Applying a Switching to Self starter ...

3.Whenever the value of the vehicle comes down to a particular range then again the motor should be turned on and the Diesel drive turned off by cutof f the suply to spark plug .....

i designed a System to achieve these as folows a Dynamo to generate EMF proportional to the vehicles speed and it will be fed to a comparator (window )type then use it to Switch a relay via transistor to control on/off motor drive and at same time the output of transistor fed to monoshot to keep the self start Switch on for 3 Sec .....And then there is another Switch to control the spark plug supply When Diesel drive has to be turned off the Spark plug supply will be made open ...the diagram is as follows to comparator apths has been added to increase redundancy ....

could you Suggest improvements ....:?:

 

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