Question
In: Mechanical Engineering
How to calculate overall fuel economy of hydraulic hybrid vehicle? Know that fuel economy formula is...
How to calculate overall fuel economy of hydraulic hybrid vehicle? Know that fuel economy formula is litre per used over distance travelled. How to calculate the fuel used for both ICE and hydraulic system
Solutions
Expert Solution
The fuel economy of any automobile is calculated as distance travelled and amount of fuel consumed by vechicle.Consumption is defined in terms of volume of fuel to travel a distance ao distance travelled per unit volume of fuel consumed.Hybrid hydraulic vechicles uses prsserized fluid poer source along with along with a conventional internal combustion engine.to acheive improvement in fuel economy.Hydraulic hybrid system consists of four main components working fluid ,reservoir,pump and accumulator.
Fuel economy is the relationship between distance travelled and fuel used. Vechicles fuel consumption is defined as US gallons per 100 miles. In automobiles Brake specific fuel consumption is used to evaluate the efficiency of internal combustion engines.Amount of fuel used is usually measured on dynmometer as a mass flow rate.There is a need to calculate power to drive ratio for hydraulic systems.Than a ratio of electric power and ICE power should be assumed.For example 10 % of electric power. Knowing the efficiency of ICE engine necessary amount of fuel can be esstimated.
samet mamat answered 2 years agoRelated Solutions
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Below are the control strategy of hydraulic hybrid vehicle. How can I modify code below to...
Below are the control strategy of hydraulic hybrid vehicle. How
can I modify code below to include the torque of motor of hydraulic
hybrid vehicle? and How can I improve this
function [SOC,k,T_engine,S_engine,T_brake,T_pump] =
strategy(duration,gamma,P,V,Pmin,Pmax,Vmin,Vmax,SOC,Disp,T_wheel,S_wheel,gearratio,S_map,Te_max,T_engine,S_engine,T_pm,k,eff_mech,eff_hyd)
S_flywheel = S_wheel*gearratio;
T_flywheel = T_wheel/gearratio;
T_brake = 0;
if SOC < 0.1
k=1; %Engine on
elseif SOC > 0.7
k=0; %Engine off
end
%T_pump +ve = charging
%T-pump -ve = discharging
if k==1
if T_engine*eff_mech < T_flywheel
%Engine provides full torque when hydraulic...
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Engineers are testing company fleet vehicle fuel economy (miles per gallon) performance by using different types...
Engineers are testing company fleet vehicle fuel economy (miles
per gallon) performance by using different types of fuel. One
vehicle of each size is tested. Does this sample provide sufficient
evidence to conclude that there is a significant difference in
treatment means?
87 Octane
89 Octane
91 Octane
Ethanol 5%
Ethanol 10%
Compact
27.2
30.0
30.3
26.8
25.8
Mid-Size
23.0
25.6
28.6
26.6
23.3
Full-Size
21.4
22.5
22.2 ...
Engineers are testing company fleet vehicle fuel economy (miles per gallon) performance by using different types...
Engineers are testing company fleet vehicle fuel economy (miles
per gallon) performance by using different types of fuel. One
vehicle of each size is tested. Does this sample provide sufficient
evidence to conclude that there is a significant difference in
treatment means?
87 Octane
89 Octane
91 Octane
Ethanol 5%
Ethanol 10%
Compact
30.4
29.7
16.0
30.0
29.8
Mid-Size
17.0
17.2
20.8
19.1
30.7
Full-Size
28.0
28.3
19.7
29.8
27.1
SUV
18.6
22.2
15.0
23.9
31.6
Click here for the...
Engineers are testing company fleet vehicle fuel economy (miles per gallon) performance by using different types...
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treatment means?
87 Octane
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Ethanol 5%
Ethanol 10%
Compact
31.2
31.6
22.0
29.7
30.6
Mid-Size
17.3
17.6
18.9
17.2
28.2
Full-Size
27.2
28.1
15.9
31.9
29.7
SUV
20.0
22.0
20.7
23.6
31.4
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Engineers are testing company fleet vehicle fuel economy (miles per gallon) performance by using different types...
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87 Octane
89 Octane
91 Octane
Ethanol 5%
Ethanol 10%
Compact
30.8
28.4
17.7
30.7
31.1
Mid-Size
17.0
19.9
20.1
17.1
31.4
Full-Size
28.9
29.0
20.4
27.0
31.3
SUV
21.9
22.8
19.5
18.7
29.6
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Engineers are testing company fleet vehicle fuel economy (miles per gallon) performance by using different types...
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87 Octane
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Ethanol 5%
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Compact
30.8
28.4
17.7
30.7
31.1
Mid-Size
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19.9
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