f****y
发帖数: 2196 | 1 车子开了几年, 据观察, 冬天的mpg在26, 27, 夏天在28 (尤其是这几天季节转换, 每
天升0.1). 04年老volvo, 常年基本上加shell, 上下班开的路还是那条. 在南加州, 夏
天开点冷气, 冬天基本不开暖气, 夏天反而省油. 好奇问下为何会这么有规律? | g*q
发帖数: 26623 | 2 (南加州)冬天废油主要是热车那几分钟,需要稍微多烧一点点油.里程长的话应该没有区
别. | H*******o
发帖数: 1637 | | g*q
发帖数: 26623 | 4 绝大多数情况不用原地热车,除非是出门就得上高速.
但是只要你的车水温没上来,开的时候就是在热车.
【在 H*******o 的大作中提到】
: 热车这事，到底要不要做
| s******t
发帖数: 3572 | 5 里程长也有区别，不完全是油的影响。这东西网上其实一搜一大把。
Cold weather affects your vehicle in more ways than you might expect:
Engine and transmission friction increases in cold temperatures due to
cold engine oil and other drive-line fluids.
It takes longer for your engine to reach its most fuel-efficient
temperature. This affects shorter trips more, since your car spends more of
your trip at less-than-optimal temperatures.
Heated seats, window defrosters, and heater fans use additional power.
Warming up your vehicle before you start your trip lowers your fuel
economy—idling gets 0 miles per gallon.
Colder air is denser, increasing aerodynamic drag on your vehicle,
especially at highway speeds.
Tire pressure decreases in colder temperatures, increasing rolling
resistance.
Winter grades of gasoline can have slightly less energy per gallon than
summer blends.
Battery performance decreases in cold weather, making it harder for your
alternator to keep your battery charged. This also affects the performance
of the regenerative braking system on hybrids.
In severe winter weather, your mpg can drop even further.
Icy or snow-covered roads decrease your tires' grip on the road, wasting
energy.
Safe driving speeds on slick roads can be much lower than normal,
further reducing fuel economy, especially at speeds below 30 to 40 mph.
Using four-wheel drive uses more fuel.
【在 g*q 的大作中提到】
: (南加州)冬天废油主要是热车那几分钟,需要稍微多烧一点点油.里程长的话应该没有区
: 别.
| b******6
发帖数: 572 | 6 好像是冬天气温低，需要多点汽油来混合达到爆炸点。
【在 f****y 的大作中提到】
: 车子开了几年, 据观察, 冬天的mpg在26, 27, 夏天在28 (尤其是这几天季节转换, 每
: 天升0.1). 04年老volvo, 常年基本上加shell, 上下班开的路还是那条. 在南加州, 夏
: 天开点冷气, 冬天基本不开暖气, 夏天反而省油. 好奇问下为何会这么有规律?
| c**********r
发帖数: 2372 | | w*****y
发帖数: 506 | |
|
