Abstract: A fuel cell vehicle includes a fuel tank module that accommodates a fuel gas, and a rail arranged along a vehicle-width direction of the fuel cell vehicle in a floor part of the fuel cell vehicle, in which the fuel tank module includes a casing that accommodates a fuel tank accommodating the fuel gas, a block unit arranged in a bottom surface of the casing and configured to be attachable to and detachable from the rail and movable along the rail, and a fixation unit that can fix the block unit to the rail and release fixation of the block unit to the rail.

Abstract: A fuel cell vehicle includes a fuel tank module that accommodates a fuel gas, and a rail arranged along a vehicle-width direction of the fuel cell vehicle in a floor part of the fuel cell vehicle, in which the fuel tank module includes a casing that accommodates a fuel tank accommodating the fuel gas, a block unit arranged in a bottom surface of the casing and configured to be attachable to and detachable from the rail and movable along the rail, and a fixation unit that can fix the block unit to the rail and release fixation of the block unit to the rail.

Abstract: In an engine fuel combustion control apparatus for determining ignition advance angles on the basis of a regular map or a highoctane map, the current advance angle on the regular map is incremented as long as knocking is absent within a predetermined engine speed range, and the regular map is switched to the highoctane map only when the advance angle is equal to or larger than the reference map switching line and the maximum highoctane map retard angle simultaneously, in order to prevent hunting between the two maps. Further, the current advance angle on the highoctane map is decremented when knocking is present and the highoctane map is switched to the regular map when the advance angle is smaller than the maximum highoctane map retard angle. The map used immediately before an engine stop is used in the succeeding engine start, in order to prevent knocking or to obtain a high engine output at engine restart.

Abstract: An engine has a crankshaft and cylinders. Each of the cylinders is associated with an ignition coil and a power transistor for controlling the ignition coil. Reference signals are generated at reference crank angles corresponding to the cylinders respectively. The cylinders are separated into groups and the cylinders in a common group are different from each other by an interval of 360.degree. in crank angle. The reference signals corresponding to the cylinders in a common group are similar to each other. The reference signal corresponding to the cylinder in a group is different from the reference signal corresponding to the cylinder in other group. The reference signal corresponding to preset one of the cylinders is different from the reference signals corresponding to the other cylinders.

Abstract: In order to simultaneously prevent engine damage due to violent knocking and maintain good fuel economy, an ignition control system firstly controls the ignition timing according to a first schedule suited for fuel having a first octane rating until the engine enters a preselected mode of operation. At this time the ignition is advanced until knocking occurs. The conditions under which the knocking is generated are compared with prememorized data and if this reveals that the octane value of the fuel is higher than that for which the first schedule is suited control is switched to a second schedule designed for fuel having a second and higher octane value.

Abstract: A watchdog-type fail-safe system monitors program execution by a computer used, e.g., in controlling operation of an automative vehicle engine. The system includes a control unit, with a microprocessor; and a memory, which stores program segments. These segments include a main routine for performing a background job (BGJ), and a plurality of interrupt routines for handling event generated interrupts. Completion of the BGJ causes transition of an emergency decision signal, provided by the control unit, to a first level. Initiation of a particular first interrupt routine causes transition of the decision signal to a second level. Abnormalities in program execution may result in non-transition of the decision signal. If there is non-transition of the decision signal for greater than a predetermined reference time period, a fault condition signal is generated. This may initiate various emergency procedures, e.g., stopping or resetting the computer, and visual or audio alarms.

Abstract: An electronic control system for an internal combustion engine in an automotive vehicle can check sensors for determining various engine operating parameters and actuators for controlling the engine operation corresponding to the engine operating condition which is determined by a microcomputer based on the sensor signals. The control system therefore includes a check unit cooperative with the microcomputer for operating the later for effecting the checking operation corresponding to selected one of sensors and actuators.

Abstract: A fuel injection control system that controls the quantity of injected fuel for an internal combustion engine of the type such as a V-8 engine is disclosed. Such fuel injection control system first calculates a basic amount of fuel to be injected per engine revolution T.sub.p (T.sub.p =Q/N .times.Constant Q: intake air flow rate N: engine revolution speed, e.g., rpm), then calculates correction coefficients (COEF, .alpha..sub.L and .alpha..sub.R) on a basis of other various engine operating parameters (e.g., cooling water temperature) and the air-fuel mixture ratio of each bank of cylinders as sensed by exhaust gas detectors and combines either of their numerical results with the numerical result T.sub.p to obtain a pulse width representing an amount of fuel per revolution T.sub.i, and lastly opens either or both groups of fuel injectors whereby when the intake air flow rate Q is more than a predetermined value Q.sub.

Abstract: A system for controlling the idling engine speed (output) of an internal combustion engine (controlled device) in an automotive vehicle in either open-loop or feedback control mode is disclosed. In the open-loop control mode, the control operation is based on the cooling water temperature of the engine, in the feedback control mode, the control operation being based on the deviation of an actual engine speed from the reference (input) engine speed. In some conventional systems, there is provided a time delay between the transfer of control from open-loop control to feedback control. However, according to the present invention there is provided a means for supplying instantaneously an additional intake air flow quantity to the engine in addition to the intake air quantity required in the feedback control mode at the instant when the control mode is transferred from the open-loop to feedback control.

Abstract: When control of a control program stored in a memory of a microcomputer runs wild and enters an otherwise unused memory location, an instruction written in the otherwise unused location returns the control to its start state.

Abstract: An automatic control system for an automotive vehicle in use with a microcomputer has a checking system for checking an input unit, a ROM, a RAM and an output unit of the microcomputer. The checking system comprises a means which stores various checking programs to be executed for checking above-mentioned elements of the microcomputer. The checking system effectively operates to check the elements without causing expanding of duration of execution of the checking programs.

Abstract: A fuel injection rate control system for a fuel-injection internal combustion engine, wherein basic fuel injection rate signals are produced upon detection of the load on the engine and the engine output speed and are modified by the correction values read out from a collection of data indicating various correction values in terms of the engine output speed and the engine load. When the correction values selected are zeros or smaller than a predetermined value, the fuel injection rate may be controlled to achieve a predetermined air/fuel ratio in the engine through detection of the air/fuel ratio of the mixture produced in the engine.

Abstract: In an internal combustion engine having an exhaust recirculation system including a combination of a vacuum-operated recirculation rate control valve and a solenoid-operated vacuum compensating valve, the vacuum compensating valve is controlled by pulse signals delivered from a microcomputer responsive to predetermined operational parameters, such as the revolution speed of the engine and the load on the engine, for modifying the pulse signals depending upon, for example, the accelerating and non-accelerating conditions of the engine.

Abstract: An automatic control system for an automotive vehicle in use with a microcomputer has a checking system for checking an input unit, a ROM, a RAM and an output unit of the microcomputer. The checking system comprises a means which stores various checking programs to be executed for checking above-mentioned elements of the microcomputer. The checking system effectively operates to check the elements without causing expanding of duration of execution of the checking programs.