摘要:
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.
摘要:
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. The chronological progression of the adsorption/desorption behavior of the HC adsorber during an operating phase of the reformer as a function of the reformate gas temperature occurring in the operating phase and/or a temperature gradient of the reformate gas occurring in the operating phase is coordinated with the chronological progression of the operating behavior of the consuming device such that a significant desorption of hydrocarbons from the HC adsorber takes place only when the consuming device is in an operating condition in which the desorbed hydrocarbons are processed by the consuming device such that the hydrocarbon fraction of the gases expelled from the consuming device and/or the function of the consuming device is/are not significantly influenced by the desorbed hydrocarbons.
摘要:
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.
摘要:
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.
摘要:
A method is provided for operating a bivalent internal combustion engine, which may run lean with using a fuel with wide inflammability limits, such as hydrogen, whereby a first lean region close to the stoichiometric air ratio and a second lean region, adjacent to the first in the direction of greater λ valve are defined. The operation in the first lean region is skipped such that operation occurs either in the second lean region or at an approximately stoichiometric air ratio.
摘要:
For the regeneration of an NOx storage catalyst by means of hydrogen in a secondary hydrogen process, the hydrogen required for the regeneration is taken from a primary hydrogen process.
摘要翻译:为了在二级氢气方法中通过氢气再生NO NO x存储催化剂,再生所需的氢气取自一次氢气过程。
摘要:
A method is provided for operating a bivalent internal combustion engine, which may run lean with using a fuel with wide inflammability limits, such as hydrogen, whereby a first lean region close to the stoichiometric air ratio and a second lean region, adjacent to the first in the direction of greater λ valve are defined. The operation in the first lean region is skipped such that operation occurs either in the second lean region or at an approximately stoichiometric air ratio.
摘要:
For the regeneration of an NOx storage catalyst by means of hydrogen in a secondary hydrogen process, the hydrogen required for the regeneration is taken from a primary hydrogen process.
摘要翻译:为了在二级氢气方法中通过氢气再生NO NO x存储催化剂,再生所需的氢气取自一次氢气过程。
摘要:
A fuel cell system is disclosed. A fuel cell stack is in fluid communication with a reformer. An air conditioning system is in fluid communication with the reformer. Methods of making and using a fuel cell system are also disclosed.
摘要:
The invention relates to a method and an apparatus for conveying a cryogenically-stored fuel to an internal-combustion engine for providing a combustible working gas. In accordance with the invention, the cryogenically-stored fuel is drawn, in the liquid state, from a thermally-insulated fuel tank, and forced into a fuel line by a conveying device. At least from time to time, within the scope of the operation of the conveying device, the pressure in the fuel tank is increased by an amount that is larger than the difference between a drop in the supply-flow pressure occurring on the intake side of the conveying device and the difference between the dominant tank pressure at a pump-inlet point and the boiling pressure dictated by the instantaneous fuel temperature.