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Transfer Dynamics and Cornering Ability how do you mesure cornering ability, Excellent cornering abitlities, automotive cornerin, dynamic weight transfer, dynamic weight transfer braking, dynamic weight transfer calculation, dynamic transfer function, dynamic transfer function simulink

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Cornering Ability:
The centrifugal force acts on a body when it moves in the circular direction. The centrifugal force Fc takes effect in the centre of gravity on the vehicle and exerts force in a radial direction from the centre of the circular path towards the out side. It is directly proportional to the mass and driven speed of the vehicle and it rises with the decrease in corner radius.

Transversal Acceleration:

The centrifugal forces supported by the cornering forces lead to transversal acceleration of the vehicle towards the centre of the curve. The tyre slip angle of different sizes occurs at the wheels depending on the strength of the centrifugal forces. The tyre slip angle increases with the increase in Transversal acceleration. [Read more…]

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Driving Characteristics and Cornering Ability driving behavior, voltage drive circuit, characteristics of driver, driver characteristics in traffic engineering, driving traits, characteristics of a good driver, vehicle characteristics in traffic engineering, characteristics of a driver personality, how do you mesure cornering ability, Excellent cornering abitlities, automotive cornering

12-Mar-13 11-21-54 PM

DRIVING STABILITY:

Under the influence of the exterior disturbances with regard to the given choice of course, the driver-Vehicle system should remain stable. The driver as a control mechanism has limited possibilities to intervene. Modern electronic system such as EBS and ESP are able to stabilise many critical and unstable driving situations by means of specific intervention. E.g. on individual wheels.

DRIVING CHARACRERISTICS:

Driving characteristics refer to properties of the vehicle. Good driving characteristics are
– When there is a sensible relationship between steer angle and change in course.
– When the driver is provided with useful information (e.g.Tyre noise) on the state of movement of the vehicle.
– When outside disturbances (e.g. Cross wind) only lead to slight course deviations.
– When the achievable cornering speed and transversal acceleration are high with regard to driving safety and performance.

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Aerodynamic Drag Concept aerodynamic drag equation, aerodynamic drag coefficient, aerodynamic drag definition, aerodynamics lift, aerodynamic resistance formula, aerodynamic resistance definition, aerodynamic drag in cars, automotive aerodynamics, aerodynamic drag coefficient cars, aerodynamic drag reduction of a car by vortex generation, aerodynamic drag calculation, aerodynamic drag reduction technologies

drag 3

Apart from Rolling resistance, the Aerodynamic Drag also represent the largest proportion of the overall resistance. It increases in the same way as that of Rolling resistance on movement of the vehicle and arises with increase in driving speed.

Drag Co-efficient:
The aerodynamic drag FL is depending on the following factors.

  1. Speed of the vehicle V
  2. Size and shape of the vehicle and
  3. Air density ρ

The calculation for Drag co-efficient is as shown below.
FL = 0.5 . Cw . A . ρ .

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Drive Power and Aquaplaning what are cars that have 50-50 weight distribution, factor that affects vehicle balance, car weight distribution calculator, road handling meaning, lateral acceleration, aquaplaning formula, aquaplaning meaning, aquaplaning Truck, aquaplaning speed, aquaplaning speed formula, aquaplaning tyres

Aquaplaning

In order to overcome the road resistance which we discussed so far, we require high drive power at the wheels. To drive upon upward inclines or to accelerate the corresponding reserve power is necessary. The vehicle with high reserve power can only reach higher average speed on hilly stretches and where lot of overtaking is required.

ROAD GRIP:

For efficient transfer of drive power and for safe deceleration an adequate power transmission between the tyre and the road surface is required. The static friction must be correspondingly high. In case the forces from the tyre contact area of the vehicle cannot be completely transferred to the road surface there is loss of road grip and the vehicle swerves.

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Acceleration and Climbing Resistance resistance to vehicle motion, gradient resistance in automobile, gradient resistance definition, gradient resistance formula, gradient resistance, truck resistance, tractive resistance, curve resistance

climb

The Acceleration and climbing resistance also contributes to the overall road resistance on the moving vehicle.

Accelerating and Deceleration:

When the vehicle moves on acceleration, mass inertia forces arise in the opposite direction of the acceleration. As deceleration is negative acceleration the inertia forces have their effect with the direction of the movement of the vehicle. The proportion of inertia forces in the overall road resistance is called Acceleration resistance.

Translational and Rotational:

The Acceleration resistance is divided in to 1) Translational Part and 2) Rotational part. A Translational part resulting from the total mass of the vehicle and a rotational part arises due to the mass inertia of the rotating components of the vehicle drive unit. The rotational part is relatively insignificant as regard to the total road resistance.

Climbing Resistance:

The climbing resistance is the proportion of the overall road resistance that is influenced by the Topography (Ref. fig)


A: Forces on upward inclined.
B: Forces during Acceleration.
a: vehicle Acceleration
m: Mass of the vehicle.
αST: Upward inclination angle
G: vehicle weight
FST: Climbing resistance
FT: Acceleration resistance

The down ward force FST works against the direction of the travel of the vehicle when the vehicle moves upwards on the inclined plane and when driving downhill it works in the direction of the movement of the vehicle. It is proportional to the gross weight of the vehicle and the inclination angle of the inclined plane on which the vehicle is moving.

FST = G . SinαST

Here αST specifies the inclination angle.

Acceleration resistance:

Acceleration resistance is influenced by the inertia forces. The greater the vehicle acceleration ie.the faster the change in speed the greater the force required to over come the acceleration resistance. Similar way the Accelerating force FT (Translational force) also rises with the mass “m” of the accelerated vehicle.

FT = -m . a

Deceleration:

On Braking or Deceleration the inertia forces continue to push the vehicle in its direction of movements. It is very significant factor in the case of commercial vehicles due to heavy mass.

Next session : Aerodynamic Drag and Measures to overcome

Truck Driving Dynamics commercial vehicle dynamics, fundamentals of Truck dynamics, Truck dynamics article, Truck specs, certification automotive, fundamentals of Truck dynamics, vehicle dynamics, dynamic automotive systems, auto dynamics, dynamics, dynamic auto care,

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The Driving Dynamics analyses the forces that acts on the moving vehicle. The combination of all Forces that offset the vehicle during driving movement is monitored for its effectiveness. These forces are influenced by the following parameters.

  • Vehicle weight
  • Acceleration
  • Deceleration (Braking)
  • Road conditions
  • Cornering and
  • Air flow

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Safety features to be incorporated in Tippers (DGMS) Tipper truck driver safety, Tipper truck , Tipper truck regulations, Tipper truck safety tips, Tipper trucking industry safety, Tipper trucking safety topics, Tipper truck safety equipment, Tipper truck safety checklist, injuries in Tipper trucking industry, Tipper truck driver safety topics, Tipper truck driving safety topics, dump Tipper truck safety topics, Tipper truck safety tips, transportation safety meeting topics, Tipper truck driver safety training, Tipper truck driver safety slogans

MIn

The most common mode of transport of coal/ ore and materials in opencast mines whether is big or small is trucks or tippers and its use is on increase. So are unfortunately the accidents are also on rise due to various reasons.

The analysis of accidents revealed that majority of them occurred due to :

  • Head on collision and head to tail collision
  • Failure of brakes.
  • Over speeding or rash driving by operators
  • While reversing
  • Fire
  • While truck is operated when body is raised
  • Short circuit

A model code of practice was circulated vide circular no 11 of 1973 and was needed to be enforced by management after getting concurrence from concerned Director of Mines safety.

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Basic Truck Safety truck driver safety, truck , truck regulations, truck safety tips, trucking industry safety, trucking safety topics, truck safety equipment, truck safety checklist, injuries in trucking industry, truck driver safety topics, truck driving safety topics, dump truck safety topics, truck safety tips, transportation safety meeting topics, truck driver safety training, truck driver safety slogans

lane 2

Safety plays a vital role in vehicle design and construction. To keep the risk of vehicle accident as low as possible vehicles are designed with technical feasible system and components. Also the vehicles are designed in such a way that the driver of the vehicle feels the optimum comfort which enables him to enhance the performance capabilities.

Active safety is further subdivided as follows:

1.Driving Safety : For safe and easy drivability the vehicles are designed in such a way that the Brakes, wheel control, Tyres, suspension and steering matched to each other as much as possible so that the vehicle can be easy to drive with safe even in poor road conditions. In order to achieve the high level of Active safety in modern commercial vehicles the systems like ABS, ASR, Electronic Brake system (EBS) in conjunction with Electronic Stability Programme ESP are incorporated in the vehicle design.

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Legal Payload of a Truck how to increase payload on a truck, legal truck weight, legal axle weights for tractor trailer, truck axle weight limits by state, truck load weight limits, commercial truck axle weight limits, truck weight limits by state, legal weight for 53' trailer, legal truck axle weights, pickup truck weight, truck weight unit, truck weight calculator, truck weight capacity, truck weight machine, truck weight sensor

To understand the Payload of a Truck, one must understand the terms GVW (Gross Vehicle Weight) and Curb Weight.

Curb weight or Kerb weight

Curb weight is the actual weight of the vehicle. It is the total weight of a truck that is coming out of a manufacturing unit with standard components as well as a full tank of fuel. This doesn't include any cargo, passengers or any additional equipment mounted by the buyer.

GVW (Gross Vehicle Weight)

As name implies Gross Vehicle Weight(GVW) is the gross weight of the truck.
It is the total weight which includes the engine, fluids, full fuel tank, the passengers, cargo and any additional equipment mounted.

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Choosing your Right Truck types of truck, Truck analysis, Which truck to buy, best truck, Truck specs, Trucks, Detail report of truck

There are a number of factors one should consider when buying a Truck. A large fleet-owner of a driver-owner; you must keep these factors in mind in choosing your new truck.

Application

Know your requirements well.
The type and amount of load the truck has to carry should a deciding factor in selecting the type of body your truck needs. Equipping a body larger than your requirement will result in excess fuel-consumption. Overloading also eats in a lot of fuel, also leads to a lot of wear and tear to the truck components.

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