vehicle chassis and frame design
Automotive industry is one of the biggest and most innovative in total industry area. Almost all manufactured cars and vehicle are made by mass production but in the very beginning…
Introduction to The investigation of the mixture formation upon fuel injection into high-temperature gas flows
Combustion of a fuel in the combustion chambers of a gas-turbine engine and a gas-turbine plant is closely connected with the processes of mixing (Lefebvre, 1985). Investigations of these processes carried out by both experimental and computational methods have recently become especially crucial because of the necessity of solving ecological problems. One of the most pressing problems at present is account for the influence of droplets on an air flow. In some of the regimes of chamber operation this may lead to a substantial, almost twofold, change in the long range of a fuel spray and, consequently, to corresponding changes in the distributions of the concentrations of fuel phases. In this chapter physical models of the processes of interphase heat and mass transfer and computational techniques based on them are suggested. The present work is a continuation of research by Maiorova & Tretyakov, 2008. We set out to calculate the fields of air velocity and temperature as well as of the distribution of a liquid fuel in module combustion chambers with account for the processes of heating and evaporation of droplets in those regimes typical of combustion chambers in which there is a substantial interphase exchange. It is clear that when a "cold" fuel is supplied into a "hot" air flow, the droplets are heated and the air surrounding them is cooled. It is evident that at small flow rates of the fuel this cooling can be neglected. The aim of this work is to answer two questions: how much the air flow is cooled by fuel in the range of parameters typical of real combustion chambers, and how far the region of flow cooling extends. Moreover, the dependence of the flow…
How Rod Lengths and Ratios Affect Performance
Changing the length of the rods with respect to the stroke of the crankshaft offers some advantages in certain situations. The relationship between bore and stroke impacts the RPM range…
Friction drives
Friction in screw threads: · Friction in screw and nut · Friction in screw jack · Problems in screw jack Screwjack: The screw jack is a device lifting loads. For lifting heavy loads…
Making self driving cars human friendly
Automated vehicles could be made more pedestrian-friendly thanks to new research which could help them predict when people will cross the road. University of Leeds-led scientists investigating how to better…
ADAPTIVE CRUISE CONTROL
Adaptive Cruise Control (ACC) is an automotive feature that allows a vehicle’s cruise control system to adapt the vehicle speed to the environment. A radar system attached to the front…
Mercedes AMG ready with electrically assisted turbocharger
A new electrically-assisted turbocharger “effectively eliminating” lag is coming soon to a production-vehicle engine. In an announcement signaling automakers’ continuing R&D efforts for internal-combustion propulsion, Mercedes-AMG said it is preparing…
Comparison between Manual & Automatic Transmission
Both the automatic transmission and a manual transmission accomplish exactly the same thing, but they do it in totally different way. Advantages of manual transmission over automatic transmission- 1. It is easier…
Gear Classification
Gear Classification: Gears may be classified according to the relative position of the axes of revolution. The axes may be 1. Gears for connecting parallel shafts, 2. Gears for connecting intersecting shafts, 3. Gears for…
Engine components and terms
The main problem in understanding the construction of the reciprocating piston engine is being able to identify and name the various parts making up the power unit. To this end,…
