Source: AAG Insight
Recently, many areas of the country have been experiencing extreme cold temperatures as well as heavy snowfall. Whether or not 2020-2021 will be an extremely cold year, as many scientists predict, it is important to understand how to drive safely and fuel-efficiently in such weather. According to a recent article published by the U.S. Department of Energy titled "The Effect of Cold Temperatures on Fuel Economy," the authors provide an informative look at the impact of cold winter weather on vehicle driving economy, the major causes of the impact, and how to properly avoid them.
Traditional fuel cars in the city road conditions in winter - 7 degrees Celsius environment, the vehicle economy compared to the summer 24 degrees Celsius will be reduced by 15%. Low temperatures have an even greater impact on new energy vehicles. In the same environment, the hybrid model economy will drop by more than 30%, while the pure electric one is a staggering 39%. In addition, the length of the trip will also have a serious impact on winter driving economy: the shorter the trip, the worse the energy economy.
Low temperature reduces energy consumption, the authors summarized eleven reasons: 1. Winter low temperature leads to vehicle lubricating fluid becomes sticky, engine friction resistance increases; 2. The engine takes longer to return to normal working condition, which is particularly affected by short-distance driving; 3. Seat heating, defrosting, A/C, etc. consume extra energy; 4. Idling warm-up causes increased fuel consumption; 5. Cold air is dense and will accumulate near the surface of the road, resulting a stronger air resistance especially on highway; 6. Lower tire pressure, resulting in increased rolling resistance; 7. Gas in winter is sometimes not as powerful as summer; 8. Ice and snow road friction is reduced, the wheels need to pay extra rolling; 9. Winter safe driving speed is low, so that the vehicle can not cruise on the fuel-saving speed; 10. Frequent use of four-wheel drive mode will also increase fuel consumption; 11. For new energy vehicles, low temperatures in winter can cause battery and energy consumption problems such as charging difficulties, reduced battery lithium-ion activity, low battery temperature requiring special preheating and the need for interior air conditioning heating.
For the above problems, the author provides nine suggestions, hope that the reader rational adoption: 1. As far as possible to park the vehicle in a warm and covered garage, parking lot, etc.; 2. As far as possible to combine multiple short trips into a longer trip, reduce frequent cold starts, etc.; 3. Try to avoid warming up the car in place for too long, usually car companies recommend to warm up the car in place for 30 seconds and then turn to low speed; 4. Avoid excessive use of heating equipment such as seat heating and defrosting; 5. Always check whether the tire pressure is normal; 6. Be sure to use the manufacturer's recommended winter fluids; 7. Can remove unnecessary roof luggage and other items; 8. New energy vehicles can be preheated on the charging pile, thus ensuring the range; 9. The seat heating function of new energy vehicles consumes much less energy than air conditioning.
Tips on Energy Saving in Winter