Abstract:
Disclosed is a battery power supply comprising battery modules each having a plurality of cells electrically and mechanically connected together in a line; a battery case for holding the battery modules; end plates, respectively provided at both end portions of the battery case, for electrically connecting positive and negative terminals provided at both ends of each of the battery modules, the positive and negative terminals having same or similar shapes, but different sizes; and terminal receiving portions which are provided at the end plates and in which the positive and negative terminals at the both ends of each of the battery modules are fitted. This structure can facilitate attaching of the battery modules to the battery case without misattachment of both terminals of each battery module, thus resulting in a reduced number of assembling steps.
Abstract:
A diagnosis system conducts diagnosis with data read out of an electronic control unit with a communications protocol installed in a vehicle. The system has an integrated circuit to be an communications interface suitable for the protocol. The circuit can be made suitable for any communications protocol by reprogramming logical functions of the circuit with design information. Instead of such circuit, the system may have a main processor and a subprocessor. On one hand, the main processor conducts virtual data communication with the control unit for diagnosis. On the other hand, the subprocessor executes a communications processing program suitable for the protocol to have data communication with the control unit. The subprocessor receives data from the main processor and transfers the data to the control unit and vice versa for the virtual data communication.
Abstract:
A diagnosis system for diagnosing an electronic control system mounted on a vehicle has a signal transmitter for transmitting a data demand signal and a signal demanding termination of transmission of the data. The electronic control system has a signal receiver for receiving the data demand signal and the transmission terminating demand signal from the diagnosis device, and an interpreter for interpreting the content of the received signals and a signal transmitter for transmitting an output signal to the diagnosis device in accordance with the interpretation.
Abstract:
A system for diagnosing a motor vehicle has a diagnosis device including a computer having a central processing unit and a ROM. The ROM stores a plurality of programs for diagnosing an electronic control system for controlling an engine. The electronic control system has a self-diagnosis function and a nonvolatile memory for storing trouble data as a result of the self-dignosis. A communication system is provided in the diagnosis device for supplying a trouble check signal to the electronic control system. In response to the trouble check signal, the electronic control system derives the trouble data from the nonvolatile memory and sends the trouble data to the diagnosis device.
Abstract:
A diagnostic system for diagnosing an electronic control system mounted on a vehicle has a diagnostic device including a call signal transmitter for transmitting a call signal to the electronic control system. The electronic control system has a call signal receiver for receiving the call signal and a data transmitter for transmitting diagnosis data to the diagnostic device. In response to the call signal, the call signal receiver operates to render the data transmitter in a signal responsive state.
Abstract:
An electronic control system for controlling an automotive engine has an identification code for designating the type of the electronic control system and the code is stored in a memory. Memory in a computer has a plurality of programs for diagnosing various types of electronic control systems. The computer is connected to the electronic control system. The identification code stored in the memory of the electronic control system is read out by the computer. In response to the read out identification code, a diagnosis program corresponding to the code is selected. The system is arranged to diagnose the signals in accordance with the selected program.
Abstract:
A crank angle detector for an engine includes a cam rotor plate for detecting a cylinder number to be ignited and a cam pulse sensor provided opposite thereto, a crank rotor plate for sensing a crank angle and a crank pulse sensor provided opposite thereto, and a controller for determining ignition timings of respective cylinders to control an ignition. The crank rotor plate is constituted by a rotor plate at starting for sensing a fixed ignition timing and a rotor plate for a normal operation. A pair of crank pulse sensors are provided opposite to the rotor plates, respectively. An input signal for the fixed ignition timing is mask-released only at starting. After that, input is continuously masked during normal operation.
Abstract:
A control unit for receiving and processing crank pulses, cam pulses, and a pressure signal and generating ignition control signals on the basis of the intake pipe pressure, the crankshaft rotational speed, and the crank angle; and a driving circuit for operating in response to the ignition control signals to drive the engine ignition coil in ignition operation.
Abstract:
A cold-engine operation detector is provided for producing a cold-engine signal when engine temperature is lower than a predetermined temperature, and an idle engine speed detector is provided. A dead zone for input of engine speed with respect to desired engine speed in accordance with engine temperature is stored in a memory. Width of the dead zone is provided to increase with decrease of engine temperature. A range of the dead zone in accordance with engine temperature is derived from the memory. When actual engine speed is out of a derived range of the dead zone, an actuator provided in an idle speed control system is operated for controlling the actual engine speed to the desired engine speed.
Abstract:
An engine speed control system for an internal combustion engine mounted on a vehicle comprises an actuator for actuating a throttle valve for increasing and decreasing the idling speed, an ignition switch for producing a signal during the operation of the engine, an engine speed signal generating circuit, an engine speed increasing signal generating circuit and an engine speed decreasing signal generating circuit, an actuator control circuit for operating the actuator in opposite directions in accordance with engine speed increasing and decreasing signals, a vehicle speed signal generating circuit, and an idling signal generating circuit for generating an idling signal in the idling operation of the engine. A stop switch is provided for producing a signal when the throttle valve reaches the closed position. A logic gate means is provided to be operated by the vehicle speed signal, idling signal, signal of the ignition switch and signal of the stop switch for turning off the actuator control circuit for stopping the operation of the actuator.