摘要:
Disclosed is a fuel cell system comprising a reformer and a fuel cell body to which a fuel gas reformed through the reformer and air are supplied and in which the supplied fuel gas and air are separated from each other and caused to flow and contact on respective electrodes to perform electric power generation. A moisture quantity adjustment device is configured to adjustably separate a portion of moisture included in the fuel gas supplied from the reformer in order for the moisture included in the fuel gas to be supplied to the fuel cell body in an appropriate quantity.
摘要:
Disclosed is a fuel cell system which comprises a power generation means that includes a plurality of fuel cells that are connectable to one another in series or in parallel through connecting terminals, a fuel gas supply conduit through which fuel electrodes of all or part of the fuel cells are connected in series and an oxidant gas supply conduit through which air electrodes of all or part of the fuel cells are connected in series; a switching means that switches an electric connection condition between the connecting terminals and connecting means of an external load device; a fuel gas supply means that supplies the fuel gas supply conduit with a fuel gas and an oxidant gas supply means that supplies the oxidant gas supply conduit with an oxidant gas; a load detecting means that detects a load of the external load device; and a control means that selects, based on an already derived relation between overall electric power output curves corresponding to the number of the fuel cells that are mutually connected and an operation temperature zone, one of the power output curves in accordance with an input from the load detecting means and selects the number of mutually connected fuel cells that brings about the highest voltage of the fuel cells thereby to control the switching means, the fuel gas supply means and the oxidant gas supply means.
摘要:
An air/fuel ratio control system detects transition of air/fuel ratio changing between rich and lean for checking if updating condition is satisfied. Updating value is derived based on a feedback correction value which is derived for adjusting air/fuel ratio toward a stoichiometric value. With the updating value thus derived, one of a plurality of learnt correction value which are set with respect to various engine driving range.
摘要:
The throttle valve position of an engine is sensed and the effective cross sectional area of the induction passage is determined via table look-up. The table is recorded in terms of three parameters. The value thus derived is divided by the engine speed of alternatively a product of the engine speed and the engine displacement. A basic air induction quantity is then determined via table look-up and is subsequently modified using a correction coefficient to allow for the effect of engine speed on the same. The effect of injector position (viz., multi-point injection/single point injection) and/or the provision of a swirl control valve can be additionally taken into consideration via the use of suitable algorithms or additional two and three parameter system tables. If an idle control by-pass passage is provided, the effect of the opening degree is considered when determining the effective cross-section of the induction passage.
摘要:
A unit fuel injector suited to diesel engines, including an injection pump portion and an injection nozzle portion both constructed in a known manner and an improved electromagnetic injection control valve, which is a normally open valve to permit leak of fuel pressure from the pump portion and closes in response to an electrical pulse signal to thereby allow increase of the fuel pressure transmitted to the nozzle and resultant lifting of a valve normally closing the spray-holes. The injection control valve is provided with a back-pressure chamber to which fuel pressure leaking from the pump portion is transmitted through a pressure-balancing passage to act on the back end of the control valve member to thereby cancel a valve-opening force produced by the action of the same fuel pressure on the tip of the valve member. So, the effective area of the leak orifice defined between the tip portion of the valve member and the valve seat can be enlarged without the need of augmenting the electromagnetic force for seating of the valve, which results in rapid lowering of the injection pressure upon termination of the supply of the pulse signal.
摘要:
Disclosed is a fuel cell system comprising a reformer and a fuel cell body to which a fuel gas reformed through the reformer and air are supplied and in which the supplied fuel gas and air are separated from each other and caused to flow and contact on respective electrodes to perform electric power generation. A moisture quantity adjustment device is configured to adjustably separate a portion of moisture included in the fuel gas supplied from the reformer in order for the moisture included in the fuel gas to be supplied to the fuel cell body in an appropriate quantity.
摘要:
A fuel reformer includes a reforming element (7) having at least one reforming catalyst passage (22) supporting a reforming catalyst which generates reformate gas from fuel; and a combustion element (8) having at least one combustion gas passage (11), which heats the reforming element (7) by the heat of combustion gas generated by burning the generated reformate gas supplied in air introduced in said at least one combustion gas passage (11). The reforming element (7) and combustion element (8) are laminated in the fuel reformer. The fuel reformer further includes plural supply holes (13) arranged in a line along said at least one combustion gas passage (11), each supply hole (13) communicating with said at least one combustion gas passage (11). At least part of the generated reformate gas is supplied to each supply hole, and is burnt downstream of each supply hole.
摘要:
A system and method for controlling a fuel injection quantity for an internal combustion engine are disclosed in which upon start of the engine acceleration, a quantity corresponding to an air quantity sucked into an engine cylinder (for example, a pressure in an intake air passage downstream of a throttle valve) is detected, an indicated mean effective pressure (P.sub.i) is detected, gains and phases of both detected values are matched with each other, respectively, so that an expected value of the indicated mean effective pressure is derived from the detected value of the air quantity corresponding quantity, a deviation between the expected value and detected value of the indicated mean effective pressure is derived, a correction quantity for a basic injection quantity at the time of an acceleration of a vehicle through the engine is derived on the basis of the deviation, and a fuel injection quantity outputted from a fuel injection valve is determined on the basis of the corrected fuel injection quantity.
摘要:
A system for measuring intake air amount to be introduced into an engine cylinder employs a throttle angle sensor as a basic intake air flow amount indicative factor. Basic intake air flow amount is derived on the basis of a throttle valve angular position and an engine speed. The basic intake air flow amount is corrected with taking delay factor to introduce the intake air past the throttle valve into the engine cylinder, and a temperature dependent factor compensating variation of air density depending upon the temperature condition.
摘要:
A solid electrolyte fuel cell system includes a reformer to produce a hydrogen-rich reformed gas from fuel, oxygen and water, and a stack structure including a stack of fuel cell units each receiving supply of the reformed gas and air, and producing electricity. The fuel cell system further includes a reformed gas cooler to cool the reformed gas supplied from the reformer to the stack structure, and a temperature control section to control operation of the reformed gas cooler in accordance with an operating condition such as a request output of the stack structure. The reformed gas cooler includes a device such as a heat exchanger for cooling the reformed gas with a coolant such as air.