Transport is the source of numerous hazards both to natural environment and people's health life. Currently, efforts are being undertaken limit negative impact economy, transport included, upon environment, one main concerns ensuring safety people. The sources hazard caused by transportation include, among other things, combustion engines. Their operation generates emission toxic compounds, greenhouse gases noise. This article discusses basic people as well issue fuels used for powering aim...

The article presents the results of measurements concentrations selected exhaust components Fiat 0.9 TwinAir spark-ignition engine operating according to load characteristics. tested has an indirect, multi-point petrol supply system and been retrofitted with indirect CNG injection system. tests are a comparison economic, ecological energetic indicators operation obtained when fuelled 95 octane petrol. gaseous fuel was preceded by autocalibration controller fuelling harmful gases: carbon...

The paper presents the results of experimental study turbocharged spark ignition Fiat 0.9 TwinAir engine, with indirect, multipoint petrol injection system, powered by and equipped system compressed natural gas (CNG) supplying into intake manifold. test provide comparison selected fuel-efficiency, energetic ecologic indicators engine work, obtained when it is Pb95 CNG gas. compares external torque-speed characteristics factory-set controllers. Also presented are concentration levels harmful...

The article presents the results of vehicles testing conducted on a chassis dynamometer during dynamic acceleration chosen gears and engine being powered by 95 octane unleaded petrol liquefied petroleum gas - LPG. test were equipped with four different fuel supply systems. first tested vehicle was carburettor system 1st generation mixer LPG gas. second adapted to run BOSCH Mono Motronic single-point Blos from BRC which allowed fuel. describes attempt evaluate active safety basis indicators...

The article describes the influence of brake pads surface machining and finishing on their friction characteristics. It shows methods noise emission performance. dynamometer test results obtained three which have different types modification detailed analysis comparison.

Abstract The aim of the paper is to analyze and evaluate basic parameters combustion process in a modern Fiat 1.3 Multijet diesel engine, fuelled esters (FAME) oil. During tests on an engine test bed, pressure waveforms cylinder were measured, basis which averaged actual indicator graphs established determined operating conditions. On their basis, increase rates heat release characteristics prepared based equation first principle thermodynamics. relative amount released rate determined. use...

Piston combustion engines used for propelling vehicles have a significantly harmful impact upon people’s living environment. As result, many years now the development of has been to large extent defined by growing legal ecological requirements. New constructional solutions are being introduced, conditions working processes in engine cylinders changed, new implemented fuel feeding systems, air intake systems and fumes exhaust. The composition conventional is modified, alternative fuels sought...

The aim of the article is to analyze and evaluate effect dual-fuel feed on diesel natural gas Indicated Engine Ignition Indicators Perkins 1104D-E44TA. actual indicator diagrams prepared during engine operation according external speed characteristic in crankshaft range from 1000 2400 rpm were analyzed. On basis average pressure courses cylinder, open made, which then operating parameters tested motor determined as: indicated pi, effective pe, power Ni, torque Mi, efficiency ηi, mechanical...

The article describes the influence of burnishing process on disc brake friction characteristics. It shows importance burnish and how unburnished can affect vehicle safety. dynamometer test results obtained six different pads compounds, their detailed analysis comparison.

The article presents selected methods of assessing the basic parameters combustion process, as well usability and limitations used to determine initiation end process in reciprocating internal engines. considered are based on data contained real, developed indicator diagrams. Basic thermodynamic assumptions scope application evaluation method actual work cycle a engine prepared double logarithmic scale were discussed. also mentions following methods: direct pressure comparison cylinder,...

The paper presents the results of research on uniqueness combustion process in Perkins 1104D-E44TA engine already equipped with a Common Rail injection system, and then adapted an test stand to dual-fuel operation. result is indicator diagram. cylinder tested was evaluated by determining indicators subsequent operating cycles, such as: for maximum pressure cycle, mean indicated pressure, diagram partial conducted tests analysis showed impact power supply process, as compared supplying only...