Abstract: An operating method for a system including a reformer which in reformate mode can convert hydrocarbon-containing fuel to a hydrogen-rich reformate gas, and a catalytic exhaust gas aftertreatment device which is acted upon by reformer gas to reach the catalytic converter light-off temperature more rapidly. During cold starts, the reformer, after its own starting phase, is initially operated in a so-called lean-burn mode, and the reformer is switched from lean-burn mode to reformate mode as soon as combustible constituents in the catalytic aftertreatment device can be independently oxidized. During the reformer lean-burn mode, the combustible constituents of the engine's exhaust gas react with the hot reformer gas, such that the cumulative exhaust gas flow has the composition of exhaust gas generated by stoichiometric combustion.

Abstract: An operating method for a system including a reformer which in reformate mode can convert hydrocarbon-containing fuel to a hydrogen-rich reformate gas, and a catalytic exhaust gas aftertreatment device which is acted upon by reformer gas to reach the catalytic converter light-off temperature more rapidly. During cold starts, the reformer, after its own starting phase, is initially operated in a so-called lean-burn mode, and the reformer is switched from lean-burn mode to reformate mode as soon as combustible constituents in the catalytic aftertreatment device can be independently oxidized. During the reformer lean-burn mode, the combustible constituents of the engine's exhaust gas react with the hot reformer gas, such that the cumulative exhaust gas flow has the composition of exhaust gas generated by stoichiometric combustion.

Abstract: A vehicle reforming system includes a reformer for chemically converting a hydrocarbon-containing fuel to a hydrogen-gas-rich reformate gas, as well as electric heating devices by which thermal energy for generating a reaction temperature required for the conversion may be fed to the reformer. The reformer system also has a high-performance capacitor, which supplies the electric heating devices with electric current.

Abstract: A reformer system has a reformer for converting a hydrocarbon-containing fuel to a hydrogen-gas-rich reformate gas, and an HC adsorber, which is connected to an output side of the reformer and adsorbs, as a function of temperature, hydrocarbons contained in the reformate gas, or for desorbing previously adsorbed hydrocarbons to the reformate gas. The reformer system transmits the reformate gas after passing through the HC adsorber to a consuming device.

Abstract: A cooling system for an internal-combustion engine of a motor vehicle having a radiator and a thermostatic valve by which the temperature of the coolant can be controlled in a warm-up operation, a mixed operation and a radiator operation. The thermostatic valve contains an expansion element which can be electrically heated for reducing the coolant temperature, the expansion element being designed such that the coolant temperature is set without heating the expansion element in the warm-up operation and/or in the mixed operation to an upper working limit temperature.