scholarly journals Establishing the regularities of correlation between ambient temperature and fuel consumption by city diesel buses

2020 ◽  
Vol 6 (3 (108)) ◽  
pp. 23-32
Author(s):  
Danylo Savostin-Kosiak ◽  
Maksymilian Madziel ◽  
Artur Jaworski ◽  
Oleksandr Ivanushko ◽  
Mykola Tsiuman ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Fuel Consumption ◽  
Diesel Buses

Analysis of temperature and altitude effects on the Global Energy Balance during WLTC

2021 ◽  
pp. 146808742110342
Author(s):  
Francisco Payri ◽  
Jaime Martín ◽  
Francisco José Arnau ◽  
Sushma Artham
Keyword(s):  
Energy Balance ◽  
Ambient Temperature ◽  
Fuel Consumption ◽  
Experimental Measurements ◽  
Compression Ignition ◽  
Oil Viscosity ◽  
Compression Ignition Engine ◽  
Global Energy ◽  
Global Energy Balance ◽  
L Compression

In this work, the Global Energy Balance (GEB) of a 1.6 L compression ignition engine is analyzed during WLTC using a combination of experimental measurements and simulations, by means of a Virtual Engine. The energy split considers all the relevant energy terms at two starting temperatures (20°C and 7°C) and two altitudes (0 and 1000 m). It is shown that reducing ambient temperature from 20°C to −7°C decreases brake efficiency by 1% and increases fuel consumption by 4%, mainly because of the higher friction due to the higher oil viscosity, while the effect of increasing altitude 1000 m decreases brake efficiency by 0.8% and increases fuel consumption by 2.5% in the WLTC mainly due to the change in pumping. In addition, GEB shows that ambient temperature is affecting exhaust enthalpy by 4.5%, heat rejection to coolant by 2%, and heat accumulated in the block by 2.5%, while altitude does not show any remarkable variations other than pumping and break power.

Evaluation of hot water storage strategy in internal combustion engine on different driving cycles using numerical simulations

2017 ◽  
Vol 232 (8) ◽  
pp. 1019-1035 ◽  
Author(s):  
Hanna Sara ◽  
David Chalet ◽  
Mickaël Cormerais ◽  
Jean-François Hetet
Keyword(s):  
Ambient Temperature ◽  
Fuel Consumption ◽  
Thermal Management ◽  
Negative Impact ◽  
Combustion Engine ◽  
Driving Cycle ◽  
Hot Water ◽  
Pollutant Emissions ◽  
Engine Model ◽  
Driving Cycles

Since the main interest worldwide of green environment companies is to reduce pollutant emissions, the automotive industry is aiming to improve engine efficiency in order to reduce fuel consumption. Recently, studies have been shifted from upgrading the engine to the auxiliary systems attached to it. Thermal management is one of the successful fields that has shown promise in minimizing fuel consumption and reducing pollutant emissions. Throughout this work, a four-cylinder turbocharged diesel engine model was developed on GT-Power. Also, a thermal code has been developed in parallel on GT-Suite, in which the different parts of the coolant and lubricant circuits were modeled and calibrated to have the best agreement with the temperature profile of the two fluids in the system. Once the model was verified, hot coolant storage, a thermal management strategy, was applied to the system to assess the fuel consumption gain. The storage tank was located downstream the thermostat and upstream the radiator with three valves to control the coolant flow. The place was chosen to avoid negative impact on the cold start-up of the engine when the tank is at the ambient temperature. This strategy was applied on different driving cycles such as the NEDC, WLTC, CADC (urban and highway), and an in-house developed driving cycle. The ambient temperature was varied between −7°C to represent the coldest winter and 20°C. The results of this study summarize the ability of the hot coolant storage strategy in reducing the fuel consumption, and show the best driving cycle that needs to be applied on along with the influence of the different ambient temperatures.

The Measurement of Fuel Consumption under Hot Ambient Temperature in Kuwait City

2017 ◽  
Vol 4 (3) ◽  
pp. 1-5
Author(s):  
Mukhtar M A.Morad ◽  
◽  
Abdulwahab A Alnaqi ◽  
Ahmad E Murad ◽  
Nawaf Alhaifi ◽  
...  
Keyword(s):  
Ambient Temperature ◽  
Fuel Consumption

Fuel consumption model for conventional diesel buses

2016 ◽  
Vol 170 ◽  
pp. 394-402 ◽  
Author(s):  
Jinghui Wang ◽  
Hesham A. Rakha
Keyword(s):  
Fuel Consumption ◽  
Consumption Model ◽  
Diesel Buses

Nominated Lecture: Performance and Operation of Spark-Ignited Gas Engines

1966 ◽  
Vol 181 (1) ◽  
pp. 900-922 ◽  
Author(s):  
Malcolm L. Land
Keyword(s):  
Ambient Temperature ◽  
Fuel Consumption ◽  
Temperature Variation ◽  
Constant Pressure ◽  
Engine Performance ◽  
Chemical Processing ◽  
Load Variation ◽  
Extended Discussion ◽  
Stroke Cycle ◽  
Engine Compressors

The author discusses the application of spark-ignited gas engines to such services as gas transmission, gas gathering and chemical processing with integral angle engine-compressors as well as directly coupled units. The author also treats such performance aspects of two-and four-stroke cycle spark-ignited gas engines as: fuel consumption, cyclic dispersion in combustion, accommodation of ambient temperature variation, load variation and altitude. There is an extended discussion of pulse and constant pressure turbocharger characteristics and their influence on engine performance. Important hardware considerations are given, such as design of valves and valve inserts, cylinder heads and pistons.

Sign in / Sign up

Export Citation Format

Share Document