This paper describes an approach of how to estimate the vehicle velocity using additional sensors provided by the brake-by-wire actuators. The advantage of brake-by-wire actuators such as the electro-hydraulic (EHB) and the electro-mechanical brake (EMB) is that the caliper pressure or the clamping force, respectively, are known. Wheel speed, vehicle acceleration, and caliper pressure or clampi...

In this study, the effects of injection pressure and timing on the performance and emission characteristics of a DI diesel engine using methanol (5%, 10% and 15%) blended-diesel fuel were investigated. The tests were conducted on three different injection pressures (180, 200 and 220 bar) and timings (15 , 20 , and 25 CA BTDC) at 20 Nm engine load and 2200 rpm. The results indicated that brake s...

introduction: world health organization (who) introduced hypertension as an epidemic in developing countries. however, hypertension is adequately controlled in only 12.5% of patients.  the aim of this study was to evaluate the relationship between ramadan fasting and mean arterial pressure (map). methods: this clinical, observational study was carried out at medical o.p.d of jinnah medical coll...

the vehicle braking system is considered to be one of the most fundamental safety-critical systems in modern vehicles, as its main purpose is to stop or decelerate the vehicle. the frictional heat generated during braking application can cause numerous negative effects on the brake assembly, such as brake fade, premature wear, thermal cracks and disc thickness variation. in the past, surface ro...

The increase in fuel price is constraining car manufacturers to produce highly efficient engines with more regulations in terms of pollutant emissions. The increasing complexity of modern engines has rendered the prototyping phase long and expensive. This is where engine modeling becomes in the recent years extremely useful and can be used as an indispensable tool when developing new engine con...

This paper discusses the measurement of the dynamic centre of pressure (CoP) of a brake pad during a normal braking event using a modified 12-piston opposed calliper. The modifications allow the centre of pressure to be controlled both radially and along the length of the pad, inducing a leading or trailing centre of pressure as desired. The technique is unique in its design and implementation....

AbstractStringent emission norms and environment degradation due to pollutants from the automotive vehicles lead us to find the suitable alternative for the petro-diesel. The oxygenated fuel used is dibutyl ether(DBE). While injection pressure is 200 bar and injection timing is 20.5 0 BTDC we get higher brake thermal efficiency and lower brake specific fuel consumption for DBE10 compare to diesel.

The upcoming stringent emission regulations and the depletion of oil resources have led to the development of alternate energy sources. In the present study the performance and emission characteristics of a singlecylinder directinjection diesel engine under neat diesel operation and blends of alternative fuels with pure diesel are examined. The hot outlet water from the engine was circulated in...