What is the relationship between carbon dioxide emissions and fuel economy?
What is the relationship between carbon dioxide emissions and fuel economy?
The amount of CO2 a car emits is directly related to the amount of fuel it consumes. For instance, a diesel car emitting 95g CO2 per kilometre consumes around 3.7 litres of fuel per 100km, while a petrol car consumes around 4 litres/100km for the same CO2 emissions.
How does 1 gallon of gas become 20 lb of CO2?
When gasoline burns, the carbon and the hydrogen in the gas molecules separate. So the carbon in a gallon of gasoline (weighing 6.3 pounds) weighs 5.5 pounds (. 87 x 6.3 pounds = 5.5 pounds). So, multiply the weight of the carbon times 3.7, which equals 20 pounds of carbon dioxide!
How much is CO2 per mile?
A second estimate (not used here) is that 0.099 kg/km CO2 arises from UK car maintenance and manufacture, quoted in source [4]. This is equivalent to 0.158 kg/mile, or a total of 38 million tonnes CO2 for the 27 million cars in the UK travelling an average of 9000 miles per year, i.e. a considerably higher estimate.
Does better fuel economy mean less emissions?
Today, the US transportation sector is the country’s biggest contributor to the greenhouse gas emissions driving the climate crisis, accounting for over 28 percent of all emissions. Increasing fuel efficiency means vehicles burning less gas and sending less global warming pollution into the atmosphere.
Why do cars emit CO2?
When gasoline burns, the carbon and hydrogen separate. The hydrogen combines with oxygen to form water (H2O), and carbon combines with oxygen to form carbon dioxide (CO2).
Does natural gas produce CO2?
While combustion of natural gas does produce carbon dioxide, it produces about 30 percent less than oil and 45 percent less than coal, and natural gas doesn’t produce ash particles like coal and oil do, which adds to air pollution.
How much c02 does a tree absorb?
A mature tree absorbs carbon dioxide at a rate of 48 pounds per year. In one year, an acre of forest can absorb twice the CO2 produced by the average car’s annual mileage.
How much CO2 does a car make?
A typical passenger vehicle emits about 4.6 metric tons of carbon dioxide per year. This assumes the average gasoline vehicle on the road today has a fuel economy of about 22.0 miles per gallon and drives around 11,500 miles per year. Every gallon of gasoline burned creates about 8,887 grams of CO2.
How much CO2 is in a Litre of petrol?
approximately 2.3 kg
What do I need to know? Burning 1 L of gasoline produces approximately 2.3 kg of CO2. This means that the average Canadian vehicle, which burns 2 000 L of gasoline every year, releases about 4 600 kg of CO2 into the atmosphere.
How much CO2 do cars emit per km?
In 201 8 the national average carbon dioxide emissions intensity from new passenger and light commercial vehicles was 1 80.9 g/km. This is a 0.4 per cent improvement from 2017.
How much CO2 does a car emit?
The amount of CO2 a car emits is directly related to the amount of fuel it consumes. For instance, a diesel car emitting 95g CO2 per kilometre consumes around 3.7 litres of fuel per 100km, while a petrol car consumes around 4 litres/100km for the same CO2 emissions.
What is the average CO 2 emissions per mile (g/mi)?
In model year 2018, the average estimated real-world CO 2 emission rate for all new vehicles fell by 4 grams per mile (g/mi) to 353 g/mi, the lowest level ever measured. Fuel economy increased by 0.2 miles per gallon to 25.1 mpg, achieving a record high. Preliminary data suggest further improvements in model year 2019.
How much CO2 is in a gallon of gasoline?
Therefore, to calculate the amount of CO2 produced from a gallon of gasoline, the weight of the carbon in the gasoline is multiplied by 44/12 or 3.7. Since gasoline is about 87% carbon and 13% hydrogen by weight, the carbon in a gallon of gasoline weighs 5.5 pounds (6.3 lbs. x .87).
What is the weight of carbon and oxygen in CO2?
The hydrogen combines with oxygen to form water (H2O), and carbon combines with oxygen to form carbon dioxide (CO2). A carbon atom has a weight of 12, and each oxygen atom has a weight of 16, giving each single molecule of CO2 an atomic weight of 44 (12 from carbon and 32 from oxygen).
