An analysis of the cars and the concept of better energy consumption

Introduction Energy is involved in all life cycles, and it is essential in agriculture as much as in all other productive activities.

An analysis of the cars and the concept of better energy consumption

Messenger I started learning driving only three years ago, and — inevitably — failed my first test. Naturally, I was disappointed: And this triggered the research question: I joined a few like-minded academics in the US — Don MacKenzie and Paul Leiby — to research how the automation of road transport might affect energy use, and to quantify the potential range of these impacts.

We found that a widespread adoption of self-driving vehicles could indeed help to reduce energy consumption in a number of ways. And given that vehicle safety is expected to improve dramatically in self-driving cars, some of the heavy safety features could be removed, making cars lighter.

The bigger picture So far, so good — all of these mechanisms improve the efficiency with which a car travels. But, as a society, our interest lies in reducing total energy use, or total carbon emissions — and energy efficiency forms only one half of this picture. Our total carbon emissions also depend on the demand for travel.

So, while improving the energy efficiency of cars by automating the driving process will reduce the carbon emissions of individual vehicles, the overall impact of this change will depend on how many people use them.

For instance, consider what would happen if large numbers of people switched to self-driving cars from travelling by train. We generally prefer the privacy and convenience of travelling by car, but using public transport means we can concentrate on other stuff — such as reading a book or getting some work done.

A self-driving car offers all of these benefits. As you can see below, the features of driverless cars may have a range of impacts on energy consumption — both positive, and negative.

An analysis of the cars and the concept of better energy consumption

Changes in energy consumption, due to various mechanisms facilitated by automation. Wadud Z, MacKenzie D and Leiby P, Author provided Self-driving cars could also encourage a completely new group of people to own vehicles — for example, the elderly, the disabled and possibly those too young to drive themselves.

This would increase the welfare of that demographic by giving them greater mobility. Yet travel demand, energy use and carbon emissions would all rise: This opens up a few different possibilities. For one thing, by making the per-mile costs more visible to the user, car sharing or automated taxis could reduce travel demand from individuals.

But even greater energy savings are possible if the size of the self-driven shared car is matched to the trip type: Imagine the car dropping you off at your destination and finding a charging point to recharge itself. So, automation does have the potential to reduce energy use for road transport.

But this is not a direct result of automation per se; rather, it is due to how automation changes vehicle design, operations and ownership culture. It is clear that the benefits of self-driving cars will depend on how we use them.Efficient energy use, sometimes simply called energy efficiency, is the goal to reduce the amount of energy required to provide products and services.

For example, insulating a home allows a building to use less heating and cooling energy to achieve and maintain a comfortable temperature. Explaining what energy management is, why it's important, and how you can best use it to reduce your energy consumption.

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About Gail Tverberg

Energy management made easy. Software; Articles; Videos; Support many people use "energy management" to refer specifically to those energy-saving efforts that focus on making better use of existing.

A popular view suggests that there is a strong negative correlation between urban density and energy consumption. This implies that increasing density will result in a reduction in energy consumption [Cities and Automobile Dependence: An International .

There was great demand for more fuel-efficient cars, leading to the import of cars from Japan (a country that had been making smaller cars for years), and the down-sizing of US cars.

Figure 9. Employment and Energy Consumption using data similar to that used . Mar 18,  · Unmatched energy density means gasoline packs 46 megajoules per kilogram, compared to 23 for ethanol and less than 4 for vehicle battery options.

China's Car, Gasoline, and Oil Markets to energy management systems, explains the concepts and procedures of an energy audit, and introduces methods of energy efficiency diagnostics as well as energy efficiency technologies and best practices.

Will self-driving cars reduce energy use and make travel better for the environment?