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18/05/2019

Vanilla Ice Cream that puzzled General motors!!!!

An Interesting Story

Never underestimate your Customers' Complaint, no matter how funny it might seem!

This is a real story that happened between the customer of General Motors and its Customer-Care Executive. Pls read on.....

A complaint was received by the Pontiac Division of General Motors:

'This is the second time I have written to you, and I don't blame you for not answering me, because I sounded crazy, but it is a fact that we have a tradition in our family of Ice-Cream for dessert after dinner each night, but the kind of ice cream varies so, every night, after we've eaten, the whole family votes on which kind of ice cream we should have and I drive down to the store to get it. It's also a fact that I recently purchased a new Pontiac and since then my trips to the store have created a problem.....

You see, every time I buy a vanilla ice-cream, when I start back from the store my car won't start. If I get any other kind of ice cream, the car starts just fine. I want you to know I'm serious about this question, no matter how silly it sounds "What is there about a Pontiac that makes it not start when I get vanilla ice cream, and easy to start whenever I get any other kind?" The Pontiac President was understandably skeptical about the letter, but sent an Engineer to check it out anyway.

The latter was surprised to be greeted by a successful, obviously well educated man in a fine neighborhood. He had arranged to meet the man just after dinner time, so the two hopped into the car and drove to the ice cream store. It was vanilla ice cream that night and, sure enough, after they came back to the car, it wouldn't start.

The Engineer returned for three more nights. The first night, they got chocolate. The car started. The second night, he got strawberry. The car started. The third night he ordered vanilla. The car failed to start.

Now the engineer, being a logical man, refused to believe that this man's car was allergic to vanilla ice cream. He arranged, therefore, to continue his visits for as long as it took to solve the problem. And toward this end he began to take notes: He jotted down all sorts of data: time of day, type of gas uses, time to drive back and forth etc.

In a short time, he had a clue: the man took less time to buy vanilla than any other flavor. Why? The answer was in the layout of the store. Vanilla, being the most popular flavor, was in a separate case at the front of the store for quick pickup. All the other flavors were kept in the back of the store at a different counter where it took considerably longer to check out the flavor.

Now, the question for the Engineer was why the car wouldn't start when it took less time. Eureka - Time was now the problem - not the vanilla ice cream!!!! The engineer quickly came up with the answer: "v***r lock".

It was happening every night; but the extra time taken to get the other flavors allowed the engine to cool down sufficiently to start. When the man got vanilla, the engine was still too hot for the v***r lock to dissipate.

Even crazy looking problems are sometimes real and all problems seem to be simple only when we find the solution, with cool thinking.
What really matters is your attitude and your perception.

*“Success is not a Long jump nor a High jump, its a Marathon of Steps"*

10/05/2019

5 BIGGEST mistakes people make in automatic gearbox equipped cars
Posted on April 1, 2019 by Devesh Mishra
Cars with automatic transmission have been steadily gaining popularity for some time now. The availability of inexpensive AMT gearboxes has led to a slew of cars under Rs. 5 lakhs that come with auto boxes. Another reason for their popularity is the ease of driving that comes with them. Automatic cars are a boon in traffic-heavy conditions of India and can be operated easily in bumper to bumper traffic. Though enthusiasts still swear by the control a manual box gives, more and more people are now looking for automatic cars. However, because many people make a new transition from manual to automatic, there are several mistakes they make which end up harming the gearbox. Here are 5 such common mistakes people make while operating automatic transmission and how to avoid them.
Drive down a slope in neutral
Starting with one of the most common mistake people new to automatic cars make, coasting in neutral is a big no. The idea of switching to neutral ’N’ in order to save fuel is a potential hazard for your gearbox. This is because it cuts the oil supply, so the transmission does not get the proper lubrication for smooth operation. This, in turn, results in significant wear and damage. Also, it takes away control from the driver as the car can’t accelerate with the pedal now, which may turn out to dangerous making the car unable to avert obstacles. Therefore, we recommend discarding this habit as the repair costs will be much higher than the negligible fuel savings.
Change gears without halting from D to R (or vice-versa)
Another fatal mistake which people sometimes do thinking that automatic transmission will not get affected by this. However, just as in manual cars, putting the into reverse without stopping can result in gearbox failure. When one shifts gears in auto transmission, the mechanism makes use of a transmission band and clutches for shifting. Therefore, switching the direction of motion from ‘D’ to ‘R’ or vice versa should only be done after coming to a complete halt, unless you are ready for unnecessary wear and tear.
Launch control
Automatic Transmission equipped cars come with a feature called launch control. It lets you get a good start when in a mood for some competition. Manual gearboxes, on the other hand, let you take control of launching the car. People new to auto boxes sometimes build up the revs in neutral and then switch to drive ‘D’ when launching. However, this causes harm to the engine and the gearbox and also makes the launch jerky. The correct way to launch an automatic transmission car is to keep the car in Drive, depress the brake pedal, build revs and when you’re ready to launch, lift off the brake pedal — like you would with the clutch in a manual. To let you know, launching a car frequently has its effect on the components but if you do want to do that, then might as well do it the right way.
‘P’ without coming to a halt
In automatic transmissions, the ‘P’ mode brings the transmission to parking mode which is basically disabling the car from moving forward or backwards. When you shift the lever to ‘P’, the ‘gerbox uses a parking pawl to stop the cog from rotating, thus disabling the car from any movement. However, if the same is done in a moving car, it will result in damage to the transmission. Therefore, refrain from this practice and only put the car in parking mode when its stationary.
Neutral at traffic lights
Last and probably the most common, switching to neutral while waiting at traffic lights is not as lethal but still a mistake. Drivers mostly do this in order to save fuel and reduce the wear and tear of the transmission. However, the loss is minimal if you push the brakes and keep the gearbox in Drive mode. Also, if your car comes equipped with it, use the automatic Stop-Start system. The system turns the vehicle off when you come to a halt and restarts the engine when you take your foot off the brake pedal — provided you have the ‘D’ mode selected.
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18/02/2019

VEHICLE SENSORS: FUNCTIONS AND TYPES

In a way, sensors are the sensory organs of the vehicle. A fundamental component of electronic control systems, they must record physical or chemical variables and convert them into electrical signals...

Function

In a way, sensors are the sensory organs of the vehicle. A fundamental component of electronic control systems, they must record physical or chemical variables and convert them into electrical signals.

TYPES OF SENSORS

In recent years, there has been an explosion in the number of different types of sensor. Many new types of sensor have been seen in particular in the area of safety and convenience electronics. Essentially, sensors can be categorised as follows:

1. Position sensors (distance/angle sensors)

Position sensors are used to capture the position of

* the throttle valve,
* of the accelerator or brake pedal,
* of the distance and angular positions in diesel injection pumps,
* of the fill level in the fuel tank,
* of the steering angle,
* of the angle of tilt, etc.

The ultrasonic and radar sensors used to determine distances from obstacles for modern driver assist systems also belong in this category.

2. Speed and velocity sensors

Speed and velocity sensors are used to determine

* the speed of crankshafts,
* camshafts and
* diesel injection pumps or
* wheel speeds.

Yaw rate sensors also belong in this category. They detect the rotational movement of the vehicle about its own axis and are needed for ESP.

3. Acceleration sensors

Acceleration sensors record the acceleration of the car body and are used in passive safety systems (airbags, seat belt tensioners, roll bars) and driving stability systems such as ABS and ESP, as well as in chassis control.

4. Pressure sensors

Pressure sensors are used to capture a wide variety of pressures including

* suction or charging pressure,
* fuel pressure, brake pressure,
* tyre pressure,
* hydraulic reservoir pressure (for ABS and power steering),
*

18/02/2019

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