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IC powertrains

IC powertrains OVERVIEW AND CHALLENGES In addition to electrification, achieving the ambitious CO 2 emission reduction targets for the transport and off-road sector by 2030 requires a significant improvement in IC engines using environmentally-friendly fuels or renewable hydrogen, in such a way as to: make clean, efficient technologies accessible to
Science@ifpen n°32
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Pollutant emissions: better knowing them to fight them better

Vehicle approval certifies that the emissions of said vehicle meet the specifications imposed by existing standards. Although current regulations only concern a limited number of chemical species
Science@ifpen n°32
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Ignition simulation

In order to reduce fuel consumption in gasoline engines , manufacturers are focusing their efforts on turbocharging and downsizing . However, this option leads to an increase in the knock phenomenon
Science@ifpen n°32
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Life and death of soot: a model to control the phenomenon

Vehicle approval standards require increasingly high levels of engine performance (low fuel consumption and low emissions) over a broad working range. It is for this reason that new engine
Science@ifpen n°32
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Where aviation fuels are concerned... compromise is the name of the game

In the aviation sector, fuels derived from hydrotreated vegetable oils (HEFA a ) are seen as an alternative to petroleum based Jet A-1 b to reduce the environmental footprint of air transport
Science@ifpen n°32
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LES moves to rapid transients for cleaner powertrains

Gasoline direct injection engines emit soot particles during rapid transients . This still poorly understood phenomenon is taken into account during new WLTCs a , aimed at more accurately reproducing
Science@ifpen n°32
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Observation of soot in a diesel flame

The reduction in IC engine particle emissions requires a detailed knowledge of the physicochemical processes at work during combustion . While fuels have long since been considered as a constant for
Issue 31 Science@ifpen
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Journey to the center of a droplet

THÈSE DE CHARLOTTE GALLOIS
Issue 31 Science@ifpen
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How wet is a flow?

THÈSE DE ZLATKO SOLOMENKO, PRIX YVES CHAUVIN 2017
Numéro 30 Science@ifpen
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Exhaust gas heat: optimal recovery through supervision and control

Recovering heat from exhaust gases using the Rankine thermodynamic cycle a is one of the avenues being explored to reduce the energy consumption of IC engines. Tried and tested for stationary