Category: 6. Steering System

EPS system has electric control unit (ECU) to calculate optimum assist torque based upon torque sensor and vehicle speed sensor, to output the calculation results to power unit. EPS system has electric control unit (ECU) to calculate optimum assist torque based upon torque sensor and vehicle speed sensor, to output the calculation results to power…

EPS system designs have various components as: 1. Electric motors Electric motors are the most common electro-mechanical actuator in automobiles. Virtually every pump, fan and positioner in an automobile employs an electric motor. A typical automobile has about 25 electric motors and this number is growing with each new model. Luxury vehicles can have more…

Electric Power Steering Electric Power Steering (EPS) is a full electric system, which reduces the amount of steering effort by directly applying the output from an electric motor to the steering system. It can solve the problems associated with hydraulic power steering [4]. Working of EPS The electronic control unit (ECU) of EPS analyzes the assisting…

The approximate allowance for the analysis of dynamic loading effect can be calculated by using the velocity factor. The dynamic loads on the tooth can be due to the inaccuracies and irregularities of the tooth spacing and tooth profiles respectively. Along with that, the deflections of gear teeth under external loading can also cause dynamic…

Selection of material Factorability and reliability were also considered.Based on this Aluminum T6 7075 were selected. Module m = 3 mm (assume) Gear ratio G = 16 (assume)Pressure angle φ = 20°Helical angle is from 20° to 45° (take α = 30°)Number of pinion and gear teeth ZP=7 teeth (assume) Required Dimensions of pinion and…

In the Figure below, a sketch of a HPAS system is depicted that shows pump, valve assembly, rack and the hydraulic cylinder. The most important part is the valve assembly having torsion bar in the core of the valve. The function of this bar is to activate the valve and at the same time transfer the…

The hydraulic pump is used to convert mechanical energy into hydraulic energy. The mechanical action of the pump takes the fluid from the reservoir in to the pump by producing a partial vacuum. This action also forces the fluid in the pump to go into the hydraulic system. 1. Types of pumps: 2. Hydraulic line:…

The basic aim of power steering is to minimize human steering effort and this is achieved by a closed loop hydraulic assisted rack and pinion type steering system. The other aim is to design the rack and pinion gears to smooth out steering by using a helical gear and light weight components so that the…

The Davis steering mechanism shown in Figure 6.3 is an exact steering mechanism which consists of slotted links AM and BH attached to front wheel axle. These slotted links turns on the pivots A and B respectively. With the help of sliding members at P and Q, the rod CD is restricted to move along its length.…

The Ackerman principle is that during turning of I-center of all wheels meet at a point, then the vehicle will take a turn at that point which results in pure rolling of the vehicle. Ackerman condition for two-wheel steering: Expressed as; (6.1) Where, δo = Angle of outer wheel δi = Angle of inner wheel W…