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What speed to drive is the most fuel-efficient, is a problem that many friends are very concerned about, and there are many sayings.
Everyone generally agrees that whether it is a sedan or an SUV, the most fuel-efficient between 50 and 80, so which speed is the most fuel-efficient between 50 and 80?
The first thing to tell you is that different models are definitely different.
In order to verify this problem, I took the opportunity to drive to the suburbs to run errands, and ran a set of test data with my own car to share with everyone.
Vehicle, environment and road conditions:
Volvo V90 B5, the power system is 2.0T plus 8AT, there is a 48V light mix system
The test temperature conditions at the beginning of the test are -6 degrees Celsius, and at low speed tests, they rise to minus 5 degrees, and the wind is not strong and the impact is small
Non-closed dedicated test environment, actual road evaluation has uphill and downhill and curve effects
Test Method:
OBD data acquisition, as far as possible to use pilot auxiliary cruise control
The high speed test distance is 2 km/ h and the low speed test distance is 1 km/h
The distance difference is mainly limited by the actual road conditions, it is not difficult to go to 2 kilometers on the highway, and it is not easy to have no traffic lights on the low-speed road for 2 kilometers.
Driving Safety:
The test process is very simple, after setting up the test plan, the mobile phone App starts with one key, and each test process ends automatically, which ensures concentrated driving, and the test is carried out in the road section with less traffic flow, and the road safety is guaranteed.
Test Results:
First, let's take a look at what data is recorded in a complete test result?
A total of 5 variables, speed change, vehicle speed change (instrument cluster cruise 100, GPS speed of 97), instantaneous fuel consumption, average fuel consumption and fuel consumption trends are recorded.
The average fuel consumption end value (the second yellow number in the upper left of the fourth coordinate chart) is the final average fuel consumption of this test trip, the result of this test is the average fuel consumption of 6.841 at a uniform speed of 97, and the results behind it are no longer posted all the curves.
Speed 100 per hour
The uniform speed was done a total of 4 times, the road condition was stable, but the different sections of the highway were taken, and the results were respective
7.133, speed range 1577 ~ 1620
7.53, speed range 1577 ~ 1595
6.702, speed range 1563 ~ 1610
6.841, speed range 1580~1602 (see figure above)
Speed 90 (GPS speed 87)
Tested 1 time, the result is 6.276, the average speed of this section is relatively low, 1430 rpm up and down
Speed 80 per hour
Run out 5.300, the speed is not high, 1500 rpm up and down
Speed 70
Test twice,
The first time was the last stage of the automatic cruise and the avoidance vehicle was disturbed a bit, and the actual result should be a little lower than the current result
**The speed data recorded in this test is slightly problematic
The following result is that there is no use of fixed speed cruise, their own step out, fuel consumption results and automatic cruise is almost the same, focus on the speed, only about 1400 rpm
Speed 50 per hour
Tested twice, the results are 5.331 and 5.84, the figure is posted here, and the speed difference is 3 kilometers
Speed 50 second test results
The most expensive result
Finally, share the most fuel-intensive results of this test, the average speed is between 50 and 60, although the average speed is not low, but there is a brake and speed increase in the middle, which suddenly raises the average fuel consumption data.
This time,
The end result
The lowest fuel consumption speed in this test is 80 kilometers per hour, with an average fuel consumption of 5.3
A few simple conclusions:
For the V90CC B5 car, in the test environment of minus 5 degrees,
Speed 50 is more fuel-efficient than speed 100 per hour,
However, speed 50 is not necessarily the most fuel-efficient, according to the test results, speed 70 per hour, fuel consumption at 80 hours is better.
Different road conditions and driving conditions determine that the same average speed and fuel consumption will also vary, with an average speed of 50, that is, a good score of 5.8 and a bad score of 8.3.
The correlation between speed and fuel consumption performance will not be further analyzed, and the analysis process will be more complicated due to various comprehensive factors.
Of course, as far as the Volvo V90 B5 car is concerned, this fuel consumption performance is still remarkable.
At last
Thanks to the set of test tools provided by MOBD, from the results shared above, we can see that this set of tools can do a lot of fine fuel consumption tests, and it is not necessary to refuel the gun full of two times to carry out various working conditions and mileage fuel consumption tests.
Many self-media do fuel consumption tests, and they have to run at least 100 kilometers or even longer at every turn, and they have to run two gas stations, which is laborious and laborious.
And with the MOBD evaluation to go out to do a thing on the way to complete, and the results are very rich, there are speed, speed, fuel consumption and many other parameters can be given to everyone's reference, I believe that such results are also better than the simple amount of fuel divided by the way of mileage to let everyone know more details.
If you are also interested in vehicle fuel consumption measurements, please feel free to contact the author.
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