Vehicle Electronic Systems - Assignment Example

EAT113-Assignment by Assignment Questions Part The vehicle lights The lamps need replacement by LED Three of the LED can produce same output as 5W bulb Light output of the bulbs in terms of LED Lamp Number Wattage Number of LED Headlamp 2 45 27 Running Lamp 2 30 18 Indicator 2 20 12 Fog Lamp 2 30 18 Number Plate Lamp 2 5 3 Brake Lamp 3 20 12 Reversing Lamp 1 20 12 Rear Lamp 2 10 6 My student number end with 32, therefore, the maximum current each LED will produce will be CITATION Her03 \l 1033 (Herman, 2003) When fully activated the LED voltage is The Vehicle power supply system is When engine is not running, supplies the light. 1. First, divide the maximum current by 1000 to get the current in Amps To calculate the protection resistor, find the difference between the vehicle’s power supply system and the fully activated LED voltage, then divide by the maximum current as shown in the formulae below 2. Power used in LED circuit is calculated by finding the product of Voltage in LED and the maximum current in Amps. Therefore, Power will be Compared to the original bulbs the voltage will be 12V Percentage power reduction 3. Increase in the time that can be powered from the battery before it becomes charged: conventionally, it takes 40A per hour to supply the light. From the experiment, the maximum current is therefore, the increase in time will be (Herman, 2003) 4. The fuse rating can be calculated from the wattage and voltage for every appliance . The fuse rating is derived by dividing the power used by the headlight system by the amount of voltage that goes into the appliance. . In calculating the fuse rating for the headlight system, divide the wattage by the number of voltage. Therefore, a 4-amp fuse will be conducive. Part 2: Air Conditioning Control Unit A digital control system controls the climate control system’ air conditioning compressor. The compressor runs when: Fan is turned on (D): Temperature is high (T): Demist setting activated (D): 5. Truth Map: F T D 1 0 0 0 1 0 0 0 1 Kanaugh Map: D FT 0 1 00 FTD FTD 01 FTD FTD 11 FTD FTD 10 FTD FTD 6. Microprocessor is a chip found in the air conditioning control unit, which is used as a decision maker. It is normally referred to as the brain of the system. The microprocessor helps in reading and writing the memory of the system, interpret instructions, and spend time to communicate with other parts of the system. The microprocessor is important in conducting the logic and arithmetic operation in air conditioning control unit. The microprocessor is noted for its speed. The speed is measured in terms of Hertz. For instance, when the microprocessor for the air conditioning control unit is 3GHz, the microprocessor is in a position to perform over 3 billion activities per second (Herman, 2003). Another advantage of using a microprocessor is that the control unit can easily move and shift data between the different memory locations. Additionally, the microprocessor is used in performing complicate arithmetic operation like when and how to turn the fan on. Microprocessor has also its own disadvantages (Herman, 2003). The problem with the microprocessor is that there is high chance of overheating in addition, the limitation that it acts on the data size. Consequently, a microprocessor needs a lot of controller for it to operate to its desired capacity. Part 3: Pan Cake Generator 7. The auxiliary power supply is generated with the help of pancake generator Coil rotates once per revolution Magnetic strength is 0.1T Number of Turns is 212 (The first two digits of my student number is 40) To find the radius of the coil we use the formulae Area of the coil is Required Rotational Speed? Voltage = 12 V The length of the coil can be found by using the formula Furthermore, the rotational speed of current change rate to produce a magnitude of 12V will be (Herman, 2003) Part 4: Regenerative Breaking 8. 9. The amount of energy that is captured is To store the captured energy the voltage to be charges is calculated using the formulae 10. Amount of charge? Average current=? Time=10 sec. 11. 12. In a conventional Drive gear, the generative braking system seems similar to the car’s deceleration. Nevertheless, the system is better since one is able to know when he is recovering drive range each time the vehicle slows down. Therefore, the aggressive regenerative braking system during the traffic jam is a major cause for disaster, normally when the brake lights of volts do not appear and everyone within the vicinity becomes irritated, easily distracted, and bored (Herman, 2003). Thinking on that perspective, the aggressive regenerative braking without activating the brake lights of the car is likely to improve the collisions of the rear end. Additionally, there are various restrictions and goals when one is using the regenerative braking. In terms of safety, the negative torque applicable to the wheels can make the car to be unstable. Since regen, braking is one of the sources of negative torque. The traction control unit is used in limiting the regen if the wheel begins to slip. The performance of the system can enhance its driving experience in manner that is not availed to the conventional internal combustion engine. The system is limited when the battery of the vehicle is fully charged. This is because when the charge is added, the voltage of the full battery will rise above the safe level. The motor controller will hinder the regen torque (Herman, 2003). Reference Works Cited Herman, S. L. (2003). Electrical Principles. Clifton Park, NY: Delmar Learning. 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