Test drive of a petrol car
Having heard so much good about petrol cars, we decided to test drive one. They are said to combine cheap price with long range and fast charging. A winning formula on paper – but how are they in real life?
We sat us in the loaner car at the car salesman’s office. Automakers do not sell the cars themselves, only through independent car repair shops as middlemen. It may sound like a bad omen to buy the car from a car repair shop that you want to visit as seldom as possible. But you apparently can’t buy the car directly from the manufacturer, so you must go through such intermediaries. The seller was very “pushy” and tried to convince us to buy the car very forcibly, but the experience is perhaps better elsewhere.
So we sat in the car and pressed the START button. The car’s gasoline engine coughed to life and started to operate. One could hear the engine’s sound and the car’s whole body vibrated as if something was broken, but the seller assured us that everything was as it should. The car actually has an electric motor and a microscopically small battery, but they are only used to start the petrol engine – the electric motor does not drive the wheels. The petrol engine then uses a tank full of gasoline, a fossil liquid, to propel the car by exploding small drops of it. It is apparently the small explosions that you hear and feel when the engine is running.
The car repair shop salesman reassured us that the flammable petrol gasoline beneath our seats was completely safe and would only typically leak in the event of a crash. He also spoke of being able to drive over 300 miles without refilling which we thought was odd as who would do this in one go without wanting a bathroom break or a refreshment.
The petrol engine consists of literally hundreds of moving parts that must have tolerance of hundredths of a millimeter to function. We begun to understand why it is car repair shops that sell the cars – they might hope for something to break in the car that they can mend?
We put in a gear and drove away with a jerk. The jerk came not from any extreme acceleration, but gasoline engines apparently cannot be driven as smoothly as electric motors. The acceleration did not occur at all, because we could not get the car to go faster than 40 mph! By then the petrol engine literally howled and the whole car shook violently. Convinced that something must have broken we stopped the car. The seller then explained that with petrol engines you need to “change gears” on a regular basis. Between the engine and the wheels are not a fixed ratio gear, but a variable one. The petrol engine can produce power only in a limited speed range, and must therefore be geared with different ratios in order to continue to accelerate.
There are 5 different gears we can select with increasing speed as result. It is -as we learned quickly- very important that each time select a suitable gear otherwise the engine will either stop or get seriously damaged! You need a lot of training to learn to select the right gear at the right time – though there are also models with automatic transmissions that can do this themselves. In the manual transmission car, we needed to constantly guard the engine from damaging it. Very stressful.
We asked if the constant sound of the engine -that frankly disturbed us from being able to listen to the radio- could be turned off. But it couldn’t. Very distracting.
After getting the car up to speed through intricate changing of gears we approached a traffic light. Releasing the accelerator pedal resulted in no significant braking, we had to use the brake pedal very much to slow down the car. We were surprised to hear the brakes are completely mechanical! The only thing they generate is heat – braking gives no regeneration of gasoline back into the tank!
Sounds like a huge waste, but it would soon get even worse.
Not all my work but insightful nonetheless…..
_______________________________________________
"Pumping gas" by futureatlas.com is licensed under CC BY 2.0.
Admin Note: Imaged added for Blog Feed thumbnail
Having heard so much good about petrol cars, we decided to test drive one. They are said to combine cheap price with long range and fast charging. A winning formula on paper – but how are they in real life?
We sat us in the loaner car at the car salesman’s office. Automakers do not sell the cars themselves, only through independent car repair shops as middlemen. It may sound like a bad omen to buy the car from a car repair shop that you want to visit as seldom as possible. But you apparently can’t buy the car directly from the manufacturer, so you must go through such intermediaries. The seller was very “pushy” and tried to convince us to buy the car very forcibly, but the experience is perhaps better elsewhere.
So we sat in the car and pressed the START button. The car’s gasoline engine coughed to life and started to operate. One could hear the engine’s sound and the car’s whole body vibrated as if something was broken, but the seller assured us that everything was as it should. The car actually has an electric motor and a microscopically small battery, but they are only used to start the petrol engine – the electric motor does not drive the wheels. The petrol engine then uses a tank full of gasoline, a fossil liquid, to propel the car by exploding small drops of it. It is apparently the small explosions that you hear and feel when the engine is running.
The car repair shop salesman reassured us that the flammable petrol gasoline beneath our seats was completely safe and would only typically leak in the event of a crash. He also spoke of being able to drive over 300 miles without refilling which we thought was odd as who would do this in one go without wanting a bathroom break or a refreshment.
The petrol engine consists of literally hundreds of moving parts that must have tolerance of hundredths of a millimeter to function. We begun to understand why it is car repair shops that sell the cars – they might hope for something to break in the car that they can mend?
We put in a gear and drove away with a jerk. The jerk came not from any extreme acceleration, but gasoline engines apparently cannot be driven as smoothly as electric motors. The acceleration did not occur at all, because we could not get the car to go faster than 40 mph! By then the petrol engine literally howled and the whole car shook violently. Convinced that something must have broken we stopped the car. The seller then explained that with petrol engines you need to “change gears” on a regular basis. Between the engine and the wheels are not a fixed ratio gear, but a variable one. The petrol engine can produce power only in a limited speed range, and must therefore be geared with different ratios in order to continue to accelerate.
There are 5 different gears we can select with increasing speed as result. It is -as we learned quickly- very important that each time select a suitable gear otherwise the engine will either stop or get seriously damaged! You need a lot of training to learn to select the right gear at the right time – though there are also models with automatic transmissions that can do this themselves. In the manual transmission car, we needed to constantly guard the engine from damaging it. Very stressful.
We asked if the constant sound of the engine -that frankly disturbed us from being able to listen to the radio- could be turned off. But it couldn’t. Very distracting.
After getting the car up to speed through intricate changing of gears we approached a traffic light. Releasing the accelerator pedal resulted in no significant braking, we had to use the brake pedal very much to slow down the car. We were surprised to hear the brakes are completely mechanical! The only thing they generate is heat – braking gives no regeneration of gasoline back into the tank!
Sounds like a huge waste, but it would soon get even worse.
Not all my work but insightful nonetheless…..
_______________________________________________
"Pumping gas" by futureatlas.com is licensed under CC BY 2.0.
Admin Note: Imaged added for Blog Feed thumbnail
