25-04-2012, 10:21 AM
Power Assisted Gear Shifting Mechanism for Automobiles
power_assisted_gear_shifting_mechanism.doc (Size: 402 KB / Downloads: 165)
INTRODUCTION:
The paper deals with the real time project, “Power Assisted Gear Shifting Mechanism for Automobiles” which was done in the academic year 2007- 2008. The paper deals with the various design aspects of the creation of this project. This project is aimed at giving driver the convenience for gear shifting. The car with this project will have a series of buttons in the format of 4 forward, a reverse and a neutral. The clutch operation may or may not be put in the car depending on the user. Currently the project has been done for the transmission of third and reverse gears. The power for gear shifting is got from hydraulic fluid. The power for fluid is from the power steering pump. So a car with a power steering fitment can be easily adaptable to this project. The project has been started as a concept and it requires a lot more work to be done to put in a car.
PROBLEM DEFINITION:
Whenever a project is carried out there is a reason behind it. The existing cars now pose some problems for the drivers. In the Manual Transmission cars the main problem for the drivers is the gear shifting. But the engineering concept behind this type of transmission paves way for higher power transmission efficiency. More over the mileage of the car and life is also more. These cars do not give much of comfort ness for the drivers in the terms of using the gear lever and the clutch. Also it occupies a major area in the cabin resulting in the space congestion. These are the problems in the Manual Transmission cars.
In the Automatic Transmission type of cars, the gear shifting is easy. We just have to select the drive band, which is already preset. This selection may be either of lever type or a set of buttons. This is easy for the drivers as they don’t have to use clutch during gear shift. But there is a compromise for power transmission and mileage. As the gear selection is by a fluid, power is required to drive it, so the engine performance is reduced. So the problem here is mileage drop, power loss and also it is costly.
The need of the hour, combining the position of both MT and AT a mechanism has to be created for better mileage and comfortable gear shifting. This is the objective of the project. So a car with this project provides ease of gear shift as in AT without a compromise in mileage as in MT. the cost of the project is less as it requires a minor alteration in the gear box.
DESIGN OF PROJECT:
The project is done as a table top on the FIAT car’s gear box. The project design comprises of designing the following parts,
1. Hydraulic circuit
2. Electronic circuit
3. Mechanical components
HYDRAULIC CIRCUIT:
Hydraulic motion is selected for gear shifting owing to its large load acceptance and ease of adaptability in the car. Also the gear shift should be quick. The basic components design is explained in detail.
power_assisted_gear_shifting_mechanism.doc (Size: 402 KB / Downloads: 165)
INTRODUCTION:
The paper deals with the real time project, “Power Assisted Gear Shifting Mechanism for Automobiles” which was done in the academic year 2007- 2008. The paper deals with the various design aspects of the creation of this project. This project is aimed at giving driver the convenience for gear shifting. The car with this project will have a series of buttons in the format of 4 forward, a reverse and a neutral. The clutch operation may or may not be put in the car depending on the user. Currently the project has been done for the transmission of third and reverse gears. The power for gear shifting is got from hydraulic fluid. The power for fluid is from the power steering pump. So a car with a power steering fitment can be easily adaptable to this project. The project has been started as a concept and it requires a lot more work to be done to put in a car.
PROBLEM DEFINITION:
Whenever a project is carried out there is a reason behind it. The existing cars now pose some problems for the drivers. In the Manual Transmission cars the main problem for the drivers is the gear shifting. But the engineering concept behind this type of transmission paves way for higher power transmission efficiency. More over the mileage of the car and life is also more. These cars do not give much of comfort ness for the drivers in the terms of using the gear lever and the clutch. Also it occupies a major area in the cabin resulting in the space congestion. These are the problems in the Manual Transmission cars.
In the Automatic Transmission type of cars, the gear shifting is easy. We just have to select the drive band, which is already preset. This selection may be either of lever type or a set of buttons. This is easy for the drivers as they don’t have to use clutch during gear shift. But there is a compromise for power transmission and mileage. As the gear selection is by a fluid, power is required to drive it, so the engine performance is reduced. So the problem here is mileage drop, power loss and also it is costly.
The need of the hour, combining the position of both MT and AT a mechanism has to be created for better mileage and comfortable gear shifting. This is the objective of the project. So a car with this project provides ease of gear shift as in AT without a compromise in mileage as in MT. the cost of the project is less as it requires a minor alteration in the gear box.
DESIGN OF PROJECT:
The project is done as a table top on the FIAT car’s gear box. The project design comprises of designing the following parts,
1. Hydraulic circuit
2. Electronic circuit
3. Mechanical components
HYDRAULIC CIRCUIT:
Hydraulic motion is selected for gear shifting owing to its large load acceptance and ease of adaptability in the car. Also the gear shift should be quick. The basic components design is explained in detail.