Continental Automotive Gmbh

Continental Automotive France

Claude Courtiel

Philippe Serrecchia

Yannis Guillot

Renaud Andre

Alexis Jean

A starting assistance method and device for an internal combustion engine supplied with a fuel that may contain ethanol, and including a fluid connection pipe between an intake manifold and a braking assistance device. The method including determining the engine temperature, determining the outdoor air temperature, blocking the pipe between the intake manifold and the braking assistance device for a given duration during a phase of starting the engine when the temperature of the engine is lower than a first threshold value and the outdoor air temperature is lower than a second threshold value, and freeing the pipe between the intake manifold and the braking assistance device when the engine is rotating autonomously.

Starting assistance method and device for an internal combustion engine

A method for starting a direct-injection internal combustion engine of a vehicle includes: rotating the high-pressure injection pump by a starter; measuring fuel pressure delivered by the pump, taken at two successive compression top dead centers of the pump operating in maximum output mode; establishing the pressure gradient of the fuel, on an angular reference system, based on the two successive pressure measurements; comparing the established gradient with a predefined bijective table that respectively matches a plurality of quantities of fuel to be injected and a plurality of pressure gradients; and adapting the quantity of fuel injected during the starting phase before the engine reaches steady operating speed, depending on the result of the comparison, in order to inject a quantity of fuel that corresponds, in the predefined bijective table, to the established pressure gradient, upon authorization of the first injection given by the engine control unit.

Method for starting a direct-injection internal combustion engine by adapting the quantity of fuel injected

A method for managing the mass of fuel injected into the cylinder of an internal combustion engine fed by direct injection. The pressure and the pressure drop per unit of time are monitored () during the starting phase. If the pressure becomes too low (), or if it drops too quickly (), the mass of fuel injected on each cycle is adjusted () in order to maintain a high fuel pressure in the injector (). The method can be applied, for example, in the event of low-temperature starting using any type of fuel, for example pure or mixed ethanol.

Method for managing the amount of fuel injected into an engine

Method for cold starting an internal combustion engine operating with an ethanol fuel, with ignition controlled by a control unit including a basic ignition advance map determined for a given engine, includes the following steps applied to at least one combustion chamber in contact with a piston connected to a drive shaft:

Growing community of inventors

Vieillevigne, France

Claude Courtiel