Abstract: The invention is a method for determining indicators of pollution from overall mobility of a user, comprising detecting trips in soft modes of transport and trips in motorized vehicles by use of a smart phone; determining a real environmental footprint linked to pollution emissions for each trip in a motorized vehicle by use of a model which estimates pollution emissions by accounting for macroscopic characteristics of the vehicle and a real speed profile representing the style of driving of the user; determining a target environmental footprint from each of the motorized vehicle trips by accounting for a target speed profile representing an optimal style of driving in the model for estimating pollution emissions; and breaking down the environmental footprint for each of the motorized vehicle trips into a footprint linked to the vehicle, and to a style of driving to a type of route and; determining an overall environmental footprint for the mobility of the user by accounting for all trips in soft modes of tra

Abstract: The present invention is a method of determining emissions of vehicle pollutants using an on-board measurement system with a sensor (CAP) and a computer system including a generic model (MOD GEN) of the vehicle. The method is based on the use of the measurements and of the model for determining the amount of pollutants.

Abstract: The invention relates to a method for determining pollutant emissions from a vehicle (PSEE, pollutant emissions from the post-treatment system), said method being based on the use of measurements of the position (posGPS) and/or the altitude (altGPS) and/or the speed of the vehicle (vGPS), using models of the vehicle (MOD VEH), the engine (MOD MOT) and the post-treatment system (MOD POT) produced with macroscopic parameters (PAR).

Abstract: The invention is a method for determining indicators of pollution from overall mobility of a user, comprising detecting trips in soft modes of transport and trips in motorized vehicles by use of a smart phone; determining a real environmental footprint linked to pollution emissions for each trip in a motorized vehicle by use of a model which estimates pollution emissions by accounting for macroscopic characteristics of the vehicle and a real speed profile representing the style of driving of the user; determining a target environmental footprint from each of the motorized vehicle trips by accounting for a target speed profile representing an optimal style of driving in the model for estimating pollution emissions; and breaking down the environmental footprint for each of the motorized vehicle trips into a footprint linked to the vehicle, and to a style of driving to a type of route and; determining an overall environmental footprint for the mobility of the user by accounting for all trips in soft modes of tra

Abstract: A variable-compression ratio direct-injection internal-combustion engine comprising at least a cylinder (10), a cylinder head (12) carrying a fuel injection means (14) spraying fuel in a single sheet (34) of fuel jets (36), a piston (16) sliding in this cylinder, and a combustion chamber (32) delimited on one side by upper face (42) of the piston comprising a projection (46) rising up towards the cylinder head and arranged in the cent of a concave bowl (44). According to the invention, the combustion chamber comprises at least two mixing zones (Z1, Z2) into which fuel jets (36) are injected, one (Z1) of the zones being used for a maximum compression ratio (Tmax) and the other (Z2) zone being used for a minimum compression ratio (Tmini).