A vehicle comprising an internal combustion engine, an electrical heated type catalyst device provided in an exhaust passage of the internal combustion engine and including a conductive substrate generating heat upon energization and a catalyst heated through the conductive substrate, and a control device, the control device comprising an internal moisture calculating part calculating an amount of internal moisture comprised of an amount of moisture present at an inside of the catalyst device and an engine output control part controlling the output of the internal combustion engine based on a required vehicle output and the amount of internal moisture. The engine output control part is configured so that if moisture is present at the inside of the catalyst device, it restricts the output of the internal combustion engine to a lower output when the internal moisture is large compared to when it is small.

An apparatus for discharging water in exhaust fluid is disclosed. The apparatus includes a body having an inlet disposed on an exhaust path for exhausting exhaust fluid exhausted from a fuel cell stack to the outside and through which the exhaust fluid is introduced, an outlet communicating with the outside, an interior space allowing the inlet and the outlet to communicate each other, and a discharge passage communicating with the outside to discharge water in the interior space. The apparatus further includes a first resistance unit disposed on a flow path along which the exhaust fluid flows in the interior space and having first fine holes through which at least a portion of the exhaust fluid passes, and a second resistance unit disposed on a discharge path along which the water in the interior space is discharged through the discharge passage and having second fine holes through which the water passes.

A muffler may include a thin plate mesh provided in an internal space of an inlet chamber formed at a side opposite to an outlet chamber of a muffler housing such that gas contained in exhaust fluid passes through the thin plate mesh by collision of the exhaust fluid against the thin plate mesh and water contained in the exhaust fluid is separated from the gas; a water movement guide fluidically-connected to the inlet chamber and the outlet chamber for allowing the water gathered at the front side of the thin plate mesh in the internal space of the inlet chamber to flow therein and move to the outlet chamber; and a muffler pipe connected to the inlet chamber and the outlet chamber for allowing the gas gathered at the rear side of the thin plate mesh in the internal space of the inlet chamber to move to the outlet chamber.

Disclosed is an exhaust system for a vehicle having an exhaust passageway through which products of combustion from the engine pass through and out to atmosphere, which exhaust system has a bead portion formed in the exhaust passageway with one more holes in the lower portion thereof through which at least a portion of the rain which has entered the interior of the exhaust passageway may flow out from the interior of the exhaust passageway prior to flowing downward to a lower portion of the exhaust passageway at which the rain is undesirable.

An apparatus for discharging water in exhaust fluid is disclosed. The apparatus includes a body having an inlet disposed on an exhaust path for exhausting exhaust fluid exhausted from a fuel cell stack to the outside and through which the exhaust fluid is introduced, an outlet communicating with the outside, an interior space allowing the inlet and the outlet to communicate each other, and a discharge passage communicating with the outside to discharge water in the interior space. The apparatus further includes a first resistance unit disposed on a flow path along which the exhaust fluid flows in the interior space and having first fine holes through which at least a portion of the exhaust fluid passes, and a second resistance unit disposed on a discharge path along which the water in the interior space is discharged through the discharge passage and having second fine holes through which the water passes.

A heat shield for a reductant delivery unit (RDU), the RDU including a fluid injector with a fluid inlet and a fluid outlet, and a clamp flange for attachment to a mounting boss of a vehicle exhaust pipe. The heat shield includes a first portion which is attached to the fluid injector so as to at least partly cover the fluid outlet thereof. The first portion serves as a thermal barrier for the fluid injector and a mechanical barrier for preventing particles in the vehicle exhaust pipe from contacting the fluid injector when the RDU is attached to the vehicle exhaust pipe. The heat shield further includes a second portion which extends radially outwardly from the first portion for sealing the attachment between the clamp flange and the mounting boss of the vehicle exhaust pipe when the RDU is attached thereto.

An apparatus for discharging water in exhaust fluid is disclosed. The apparatus includes a body having an inlet disposed on an exhaust path for exhausting exhaust fluid exhausted from a fuel cell stack to the outside and through which the exhaust fluid is introduced, an outlet communicating with the outside, an interior space allowing the inlet and the outlet to communicate each other, and a discharge passage communicating with the outside to discharge water in the interior space. The apparatus further includes a first resistance unit disposed on a flow path along which the exhaust fluid flows in the interior space and having first fine holes through which at least a portion of the exhaust fluid passes, and a second resistance unit disposed on a discharge path along which the water in the interior space is discharged through the discharge passage and having second fine holes through which the water passes.

An exhaust gas purification apparatus for an internal combustion engine according to the present disclosure obtains an electric resistance value of the electrically heated catalyst after the lapse of a predetermined period of time which is a period of time required for condensed water adhered to the electrically heated catalyst to finish evaporating from the start of energization of the electrically heated catalyst, and calculates a heat energy shortage amount which is an amount of heat energy insufficient for raising the temperature of the electrically heated catalyst to a predetermined temperature or above, based on a difference between the electric resistance value thus obtained and a predetermined reference resistance value. Then, the exhaust gas purification apparatus supplies to the electrically heated catalyst an amount of energy required to compensate for the heat energy shortage amount.

Methods and systems are provided for removing moisture from an engine exhaust system. In one example, a method includes, during a vehicle key-off condition, in response to a higher than threshold exhaust moisture level and a lower than threshold engine run time during an immediately prior drive cycle, operating an electric air compressor to remove the moisture accumulated in the exhaust manifold.

A vehicle includes an internal combustion engine, an electrically-heated catalyst device provided in an exhaust passage thereof, and an electronic control unit configured to control base material electric power supply supplied to a conductive base material. The catalyst device includes the conductive base material that generates heat upon energization, and a catalyst heated through the conductive base material. The electronic control unit determines whether the conductive base material is in a stagnant period, where temperature of the conductive base material partially stagnates in a prescribed temperature zone, the stagnant period occurring when water is present inside the catalyst device in a process of increase in temperature of the conductive base material. When determining that the conductive base material is in the stagnant period, the electronic control unit controls the base material electric power supply to be lower than when determining otherwise.