What You Can do to Decrease Energy Consumption, Harmful Emissions and Wastes |
The following sections describe what you can do to minimize the environmental impact of vehicle operation.
Fuel Conservation
The most important action you can take to reduce emissions that cause global warming, smog and acid rain is to use fuel as sparingly as possible.
Avoid unnecessary idling
Turn the ignition off if you are going to wait for more than 30 seconds and you are not in traffic.
In winter, most cars require only 15 to 30 seconds of idling before being driven. These emissions from a cold engine are much higher than from a engine that is warmed up enough for the catalytic converter to be working at high efficiency. Use of a block heater and driving slowly after idling for 15 to 30 seconds can help the engine to warm up faster and reduce the emissions produced on those wintry days.
Plan your route
Don't make any unnecessary trips, and plan your route to include all the places you have to go to rather than making separate trips. This will not only shorten the total distance, but it will also keep your catalytic converter hot for the entire trip. Short trips (less than 10 km) can increase fuel consumption by 20% in summer and by 50% in winter.
Also, avoid rush-hour traffic and streets that have heavy traffic. A vehicle that is crawling along releases about three times more smog-producing VOCs than one cruising at the most fuel-efficient speed. It has been estimated that a 16 kilometre trip taken in heavy traffic over 30 minutes generates seven grams of volatile organic compounds (VOCs). The same trip in light traffic over 11 minutes produces only two grams of VOCs (a 250% decrease).3
And avoid rough roads where possible: smooth road surfaces can reduce fuel consumption by 10 to 30%.4
Use a block heater
As mentioned, the emissions from a cold engine are much higher. Pre-heating the engine with a block heater allows easier starting and more rapid warm-up, and greatly reduces engine wear.
A block heater need not be plugged in for more than one or two hours to provide effective starting. Install a timer and set it to warm your vehicle’s engine for one or two hours before driving, instead of plugging it in to operate all night.
Maintain correct tire pressure
Check the tire pressure at least once a month and maintain the maximum tire pressure specified by the vehicle manufacturer. This will decrease fuel consumption and emission.
Under-inflated tires can increase fuel consumption by 4 to 8%.5
Removal of mud and snow tires when they are no longer required will also improve fuel economy.
Maintain moderate speeds and accelerate smoothly
Avoid speeding and abrupt starts and stops. Accelerate smoothly.
The optimum fuel economy for most vehicles is achieved at a steady speed of between 80 and 100km per hour. Tests show that most cars use about 10% less fuel when driving at 90 instead of 100km/hr.6
Avoiding speed changes saves fuel. Accelerate and decelerate gradually. (This will also reduce engine wear.) Anticipating traffic movement will help you avoid frequent brake applications. Stepping on the accelerator too heavily can use up to four times as much fuel as moderate acceleration.
Refer to the owner's manual to determine optimum gear shift points for manual transmissions.
For example, the owner's manual for a. 1992 Ford Taurus recommends the following upshifts for best fuel economy when accelerating:
First to Second - 27 km/h Second to Third - 44 km/h Third to Fourth - 56 km/h Fourth to Fifth - 70 km/h |
When going up hills, let the vehicle's speed drop off gradually or shift to a lower gear when necessary. When driving down hill, ease up on the accelerator and let gravity move the vehicle.
Remove excess weight from vehicle
Keep the vehicle free of unnecessary objects which would add weight and thereby cause greater fuel consumption If you carry bags of salt in the trunk during winter, remove them when they are not needed. A roof rack can increase aerodynamic drag and result in higher fuel consumption. A roof rack that is not permanently fixed to the vehicle should be removed when it is not being used.