A control device (100) to be applied to an internal combustion engine (1) having a fuel reformation cylinder (2) and an output cylinder (3), wherein the compression end gas temperature of the fuel reformation cylinder (2) is adjusted by changing an EGR gas amount, an effective compression ratio, or a polytropic number according to an equivalence ratio in the fuel reformation cylinder (2) so as to achieve a target concentration of a specific gas component in reformed fuel generated in the fuel reformation cylinder (2). The target concentration is defined according to a required engine power.

An internal combustion engine (1) including a fuel reformation cylinder (2) for reforming a fuel and an output cylinder (3) for yielding an engine power by combusting a fuel or a reformed fuel, wherein at least a part of the surfaces constituting a volume-variable reaction chamber (23) of the fuel reformation cylinder (2) has a highly heat-insulative material (10).

An internal combustion engine (1) including a fuel reformation cylinder (2) for reforming a fuel and an output cylinder (3) for yielding an engine power by combusting a fuel or a reformed fuel, wherein at least a part of the surfaces constituting a volume-variable reaction chamber (23) of the fuel reformation cylinder (2) has a highly heat-insulative material (10).

An internal combustion engine in which a fuel reforming operation in a fuel reformation cylinder (2) is not executed and a warming operation for raising the temperature of the fuel reformation cylinder (2) is executed, when a gas temperature of a fuel reformation chamber (23) at a time point when a piston (22) in the fuel reformation cylinder (2) reaches a compression top dead point is estimated to fall short of a reforming operation allowable lower limit gas temperature. For example, EGR gas is introduced to the fuel reformation chamber (23) without cooling the EGR gas. Further, during a predetermined period from the expansion stroke to an exhaust stroke of an output cylinder (3), exhaust gas warming fuel is supplied to a combustion chamber (33). Further, the fuel is combusted in the fuel reformation chamber (23).

A dual-chamber electrolysis vessel safely stores HHO gas for use by an internal combustion engine.

Safety of vehicles employing an electrolysis generator is improved by a rollover abatement system.

HHO gas is introduced to a diesel particulate filter to improve combustion of a fuel to aid in regeneration.

A dual-chamber onboard electrolysis system is configured to produce HHO gas for heavy duty trucking applications.

An HHO gas stream for use in an internal combustion engine is heated by heat exchange from with an exhaust gas stream from the internal combustion engine.

An HHO gas stream for use in an internal combustion engine is heated by heat exchange from with an exhaust gas stream from the internal combustion engine.