CN109724661A - The measuring method of vehicle oil consumption under low temperature environment - Google Patents
The measuring method of vehicle oil consumption under low temperature environment Download PDFInfo
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- CN109724661A CN109724661A CN201711042132.0A CN201711042132A CN109724661A CN 109724661 A CN109724661 A CN 109724661A CN 201711042132 A CN201711042132 A CN 201711042132A CN 109724661 A CN109724661 A CN 109724661A
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Abstract
The invention discloses a kind of measuring methods of vehicle oil consumption under low temperature environment, it is the following steps are included: the mode tuning of vehicle air conditioner will be tested to the state of default test, the test vehicle is operated in into preset state, vehicle and computer data acquisition system are connected, tests and records to obtain the numerical value of interior engine water temperature sensor and vehicle speed sensor；Pass through the first calculation formula: T=J*EXP (H*t)+K obtains calculated engine water temperature, wherein described 3 coefficients J, H, K are related to the mass flow of engine oil spout；The engine water temperature that the calculated engine water is mildly surveyed is compared, if the two is numerically closer to, as close to the fuel consumption under actual condition.
Description
Technical field
The heating properties testing field that the present invention relates to automotive air-conditioning systems on vehicle, especially a kind of vehicle oil consumption
Measuring method, especially at low ambient temperatures to the simple of the vehicle actual consumption amount of fuel under the premise of known vehicle heating properties
Measuring method.
Background technique
Continuous with fuel price is risen upwards, but also car owner increasingly pays close attention to the oil consumption performance of vehicle.According to state
Family relevant laws and regulations, the oil consumption test experiments of vehicle be all carried out under 20 degree or so of environment temperature, while experiment in be to set
It is idle to determine air-conditioning.Specifically, common vehicle oil consumption test method in the industry, has and is measured by element sulphur in measurement tail gas
To vehicle oil consumption, or the method by directly reading fuel flow transducer obtain vehicle oil consumption etc..
And in fact, under hot weather or microthermal climate, car generally is intended to open air-conditioning system, and air-conditioning system
The power of system is also derived from fuel consumption.That is, in this case, the fuel consumption values and client tested are practical to be made
Very big difference is had between fuel consumption values, especially at low ambient temperatures.
Summary of the invention
One aspect of the invention is designed to provide a kind of measuring method of vehicle oil consumption under low temperature environment, can be opposite
The accurately practical oil consumption of measuring and calculating vehicle at low ambient temperatures.
For this purpose, the following technical solutions are proposed by the present invention:
The measuring method of vehicle oil consumption under a kind of low temperature environment comprising the mode of vehicle air conditioner following steps: will be tested
It is adjusted to the state of default test, the test vehicle is operated in into preset state, connects vehicle and computer data acquiring system
System, tests and records to obtain the numerical value of interior engine water temperature sensor and vehicle speed sensor；Pass through the first calculation formula: T=J*
EXP (H*t)+K, obtains calculated engine water temperature, wherein described 3 coefficients J, H, K and engine oil spout quality stream
Amount is related；It compares the engine water temperature that the calculated engine water is mildly surveyed and adjusts institute if the two differs greatly
State this input value of the mass flow of the engine oil spout in the first calculation formula, until the two numerically close to until, as
Fuel consumption under close to actual condition.
The measuring method of vehicle oil consumption, further includes passing through under the low temperature environment that an embodiment proposes according to the present invention
Second calculation formula FE(oil consumption)=engine oil spout the real-time speed of mass flow * 100/, the test vehicle wink is calculated
The per 100 km fuel consumption values of state.
The measuring method of vehicle oil consumption under the low temperature environment that an embodiment proposes according to the present invention, wherein the test
The default test mode of vehicle air conditioner includes adjusting the mode tuning of air-conditioning system to heating mode, temperature to full heat；
And air blower, in default test gear, corresponding air outlet is opened entirely.
The measuring method of vehicle oil consumption under the low temperature environment that an embodiment proposes according to the present invention, wherein the test
The engine water circuit system of vehicle includes warm wind heats, is connect respectively with thermostat and the water temperature sensor.
The measuring method of vehicle oil consumption under the low temperature environment that an embodiment proposes according to the present invention, wherein the section temperature
Device is connect by water pump with engine cylinder body, wherein the water temperature sensor is arranged on the cylinder cap of the cylinder body.
The measuring method of vehicle oil consumption under the low temperature environment that an embodiment proposes according to the present invention, wherein the water temperature
Sensor is also connected with expansion tank.
The measuring method of vehicle oil consumption under the low temperature environment that an embodiment proposes according to the present invention, wherein the water temperature
Sensor is also connected with radiator, and the radiator connects the thermostat.
The measuring method of vehicle oil consumption under the low temperature environment that one aspect of the invention proposes, in known test vehicle heating
Under the premise of performance, it is thus only necessary to it measures water temperature and speed can be calculated and obtain the test vehicle actual consumption fuel oil numerical quantity,
The missing of air-conditioning work measured close to the vehicle oil consumption under actual condition, meaning weight are filled up under low temperature environment and have set
Greatly.
Further, in practical applications, since the instrument board of vehicle is to directly display water temperature numerical value and speed numerical value, because
This, the method that car owner can propose through the invention directly easily calculates vehicle actual consumption amount of fuel, very convenient.
Detailed description of the invention
Fig. 1 be one embodiment of the present invention propose low temperature environment under vehicle oil consumption measuring method in, be related to test vehicle
Engine water route system construction drawing.
Fig. 2 be one embodiment of the present invention propose low temperature environment under vehicle oil consumption measuring method in, be related to testing
The real engine water temperature curve figure of vehicle.
Fig. 3 be one embodiment of the present invention propose low temperature environment under vehicle oil consumption measuring method in, be related to testing
The transient state fuel consumption computed mass flow rate curve graph of vehicle.
Fig. 4 be one embodiment of the present invention propose low temperature environment under vehicle oil consumption measuring method in, be related to testing
The transient state oil consumption calculated value curve graph of vehicle.
The reference numerals are as follows in Fig. 1.
| Cylinder body | 1 | Cylinder cap | 2 |
| Water temperature sensor | 3 | Expansion tank | 4 |
| Radiator | 5 | Warm wind heats | 6 |
| Thermostat | 7 | Water pump | 8 |
Specific embodiment
Below with reference to drawings and examples, the measuring and calculating side of vehicle oil consumption under low temperature environment is proposed to one aspect of the invention
The technical solution of method is described in further detail.
Refering to Figure 1, which illustrates the surveys of vehicle oil consumption under the low temperature environment of one embodiment of the present invention proposition
The engine water route system structure of vehicle is tested involved in calculation method.Wherein, the engine water circuit system, it is warm using one
Wind heater core 6 and engine water temperature sensor 3.Specifically, the setting of engine water temperature sensor 3 is started described
On the cylinder cap 2 of machine cylinder body 1, it is connect respectively with expansion tank 4, radiator 5 and warm air heater core 6.The swelling water
Pot 4, radiator 5 and warm air heater core 6 are also connected with thermostat 7, and the thermostat 7 passes through water pump 8 and engine cylinder body 1
Connection.
Mode tuning to heating mode, the temperature that the air-conditioning system of vehicle will be tested is adjusted to full heat；And air blower is pre-
If testing gear, corresponding required air outlet is opened entirely.Then, test vehicle igniting is operated in into preset state, connected
Vehicle and computer data acquisition system test and record to obtain test vehicle intrinsic motivation water temperature sensor and vehicle speed sensor
Numerical value.Wherein, in the present embodiment it is described test vehicle real engine water temperature curve, please refer to shown in Fig. 2.
Pass through the first calculation formula: engine water temperature is calculated in T=J*EXP (H*t)+K, wherein 3 coefficient J,
H, K is related to the mass flow of engine oil spout.Actual measurement engine water shown in Fig. 2 is mildly calculated engine water temperature to oppose
Than adjusting this input of the mass flow of the engine oil spout in first calculation formula if the two diversity ratio is larger
Value, until the two numerically close to until, as close to the fuel consumption under actual condition.Further, can also pass through
Second calculation formula FE(oil consumption)=engine oil spout mass flow * 100/ real-time speed, obtain the test vehicle transient state
Per 100 km fuel consumption values.
For example, because coefficient J, H, K in engine water temperature calculation formula are the quality streams with engine oil spout
Relevant function is measured, so, when such as the 120th second, mass flow=1.875 kg/hour of engine oil spout are adjusted, at this time J
=-72.54194801, the Kelvin of T=271.01, and actual measurement can be calculated in H=325.5419, K=- 0.00238, t=120 second
271 Kelvin of water temperature it is very close, then it is believed that 1.875 kgs/hour, as at this time close to the fuel oil under actual condition
Consumed flow is specifically illustrating, and is please referred to shown in Fig. 3.
It is then possible to pass through the second calculation formula FE(oil consumption) the mass flow * 100/40 of=engine oil spout, it obtains
Under the conditions of to " minus 20 degrees environment temperature and speed be 40 kilometers per hour ", the test vehicle transient state per 100 km oil consumption
Value, as hundred kilometers of 4.6875L/ are specifically illustrating, please refer to shown in Fig. 4.
As described above, under low temperature environment proposed by the present invention vehicle oil consumption measuring method, add in known test vehicle
Under the premise of hot property, it is thus only necessary to measure water temperature and speed can be calculated and obtain the test vehicle actual consumption amount of fuel number
The missing of air-conditioning work measured close to the vehicle oil consumption under actual condition, meaning have been filled up under low temperature environment and set to value
It is great.
Further, in practical applications, since the instrument board of vehicle is to directly display water temperature numerical value and speed numerical value, because
This, the method that car owner can be related to through the invention, directly easy measuring and calculating vehicle actual consumption amount of fuel are very convenient.
Technical scope of the invention is not limited solely to the content in above description, and those skilled in the art can not take off
Under the premise of from technical thought of the invention, many variations and modifications are carried out to above-described embodiment, and these deformations and modification should all
In belonging to the scope of protection of the present invention.
Claims (7)
1. the measuring method of vehicle oil consumption under a kind of low temperature environment, which is characterized in that itself the following steps are included:
The mode tuning of vehicle air conditioner will be tested to the state of default test, the test vehicle is operated in into default shape
State connects vehicle and computer data acquisition system, tests and records to obtain interior engine water temperature sensor and speed sensing
The numerical value of device；
Pass through the first calculation formula: T=J*EXP (H*t)+K obtains calculated engine water temperature, wherein 3 coefficient J,
H, K is related to the mass flow of engine oil spout；
The engine water temperature that the calculated engine water is mildly surveyed is compared, if the two differs greatly, described in adjusting
The mass flow of engine oil spout this input value in first calculation formula, until the two numerically close to until, as connect
Fuel consumption under nearly actual condition.
2. the measuring method of vehicle oil consumption under low temperature environment according to claim 1, which is characterized in that it further includes passing through
Second calculation formula FE(oil consumption)=engine oil spout the real-time speed of mass flow * 100/, the test vehicle wink is calculated
The per 100 km fuel consumption values of state.
3. the measuring method of vehicle oil consumption under low temperature environment according to claim 1, which is characterized in that the wherein test
The default test mode of vehicle air conditioner includes adjusting the mode tuning of air-conditioning system to heating mode, temperature to full heat；
And air blower, in default test gear, corresponding air outlet is opened entirely.
4. the measuring method of vehicle oil consumption under low temperature environment according to claim 1, which is characterized in that the wherein test
The engine water circuit system of vehicle includes warm wind heats, is connect respectively with thermostat and the water temperature sensor.
5. the measuring method of vehicle oil consumption under low temperature environment according to claim 4, which is characterized in that the wherein section temperature
Device is connect by water pump with engine cylinder body, wherein the water temperature sensor is arranged on the cylinder cap of the cylinder body.
6. the measuring method of vehicle oil consumption under low temperature environment according to claim 5, which is characterized in that the wherein water temperature
Sensor is also connected with expansion tank.
7. the measuring method of vehicle oil consumption under low temperature environment according to claim 6, which is characterized in that the wherein water temperature
Sensor is also connected with radiator, and the radiator connects the thermostat.
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| CN201711042132.0A CN109724661A (en) | 2017-10-31 | 2017-10-31 | The measuring method of vehicle oil consumption under low temperature environment |
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| CN201711042132.0A CN109724661A (en) | 2017-10-31 | 2017-10-31 | The measuring method of vehicle oil consumption under low temperature environment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113639813A (en) * | 2021-07-21 | 2021-11-12 | 东风汽车集团股份有限公司 | Automobile oil consumption testing system and method based on window glass transmissivity |
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| CN113639813A (en) * | 2021-07-21 | 2021-11-12 | 东风汽车集团股份有限公司 | Automobile oil consumption testing system and method based on window glass transmissivity |
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