Title of Invention	AN IMPROVED SELF-DIAGNOSIS INDICATION SYSTEM USED PARTICULARLY ON A VEHICLE
Abstract	To a self-diagnosis indication system for performing a startup disablement indication when an abnormal condition is self-detected at the time of startup without using on/off signals from a starter switch. There is provided a self-diagnosis indication system for outputting an operation control signal from an ECU by allowing signals from respective types of sensors for detecting an operating condition and a crank pulse signal for detecting a rotation of a crankshaft to enter the ECU and outputting a startup disablement indication signal in a state that an abnormal condition is self-detected at the time of startup, the self-diagnosis indication system being characterized in that a startup disablement indication signal is outputted when a crank pulse signal is inputted in the state that an abnormal condition is self-detected at the time of startup.

Title of Invention

AN IMPROVED SELF-DIAGNOSIS INDICATION SYSTEM USED PARTICULARLY ON A VEHICLE

Abstract

To a self-diagnosis indication system for performing a startup disablement indication when an abnormal condition is self-detected at the time of startup without using on/off signals from a starter switch. There is provided a self-diagnosis indication system for outputting an operation control signal from an ECU by allowing signals from respective types of sensors for detecting an operating condition and a crank pulse signal for detecting a rotation of a crankshaft to enter the ECU and outputting a startup disablement indication signal in a state that an abnormal condition is self-detected at the time of startup, the self-diagnosis indication system being characterized in that a startup disablement indication signal is outputted when a crank pulse signal is inputted in the state that an abnormal condition is self-detected at the time of startup.

Full Text	SPECIFICATION SELF-DIAGNOSIS INDICATION SYSTEM Technical Field The present invention relates to a self diagnosis indication system (a diagnosis indication system) such as provided on automobiles and/or motorcycles. Background Art The configuration and operation flow of a conventional self-diagnosis indication system is shown in Fig. 2. As shown in (A) of Fig. 2, detection signals fromrespective types of sensors for detecting an operating condition of an engine, an on/off signal from a starter switch and a crank pulse signal for detecting the rotation of a crankshaft to thereby calculate an engine rotational speed and a crank angle are inputted into an ECU (engine control unit). The ECU performs operation controls on such as ignition timing and fuel injection based on predetermined programs and maps according to these signals and outputs an abnormality indication signal to illuminate an indication lamp so as to indicate the presence of an abnormal condition when any abnormality is detected which results from disconnection and short circuit. In addition, when an abnormal condition is detected at the time of startup, a startup disablement indication is implemented. In this startup disablement indicating operation, as shown in (B) of Fig. 2, whether or not the abnormality was detected by a self-diagnosis is determined (step S1), and whether or not the abnormality was detected at the time of startup is determined by judging whether or not the starter switch was switched on when the abnormal condition occurred (step S2), and in the event that it was at the time of startup, then a startup disablement indication is implemented (step S3). However, with the conventional self-diagnosis indication system, since the startup condition is determinedby using on/of f signals of the starter switch, the determination means and signal wiring become complex and costs are also increased. The present invention was intended to deal with the related art and an object thereof is to provide a self-diagnosis indication system for performing a startup disablement indication when an abnormal condition is self-detected at the time of startup without using on/off signals from a starter switch. Disclosure of the Invention With a view to attaining the object, according to the present invention there is provided a self-diagnosis indication system for outputting an operation control signal from an ECU by allowing signals from respective types of sensors for detecting an operating condition and a crank pulse signal for detecting a rotation of a crankshaft to enter the ECU and outputting a startup disablement indication signal in a state that an abnormal condition is self-detected at the time of startup, the self-diagnosis indication system being characterized in that a startup disablement indication signal is outputted when a crank pulse signal is inputted in the state that an abnormal condition is self-detected. According to this configuration, in the event that an engine is started up in a state that a certain abnormal condition is self-detected, since the rotation of the engine is detected by the crank pulse signal, that the abnormality is detected at the time of startup can be detected by the input of the crank pulse signal, whereby a startup disablement indication signal can be outputted so as to indicate that a startup is not possible Thus, a startup disablement indication can be implemented without using on/off signals of the starter switch but with a simple configuration using simple and inexpensive wiring and circuits. According to a preferred configuration example, the self-diagnosis indication system has an abnormality indicating means for indicating the abnormal condition so self-detected, whereby a startup disablement condition is indicatedby changing indication modes of the abnormality indicating means by the startup disablement indication signal. According to this configuration, an abnormal condition is indicated by illuminating, for example, an indication lamp when the abnormal condition is self-detected, and when a startup is attempted in this abnormal condition, the indication modes of the indication lamp are changed, for example, to cause the indication lamp to flash so as to indicate a startup disablement condition. STATEMENT OF INVENTION According to this invention there is provided an improved self-diagnosis indication system used particularly on a vehicle comprising an ECU for out-putting an operation control signal by means of signals from respective types of sensors for detecting an operating condition and for out-putting a startup disablement indication signal in a state that an abnormal condition is self-detected at the time of startup by means of a crank pulse signal for detecting a rotation of a crank shaft characterized in that: a startup disablement indication signal is outputted when a crank pulse signal is inputted in the state that an abnormal condition is a self-detected. BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS Fig. 1 is explanatory drawings depicting the configuration and operation flow of an embodiment of the present invention. Fig. 2 is explanatory drawings depicting the configuration and operation flow of a conventional abnormality indication system. Mode for Carrying out the Invention Fig. 1 shows explanatory diagrams depicting the configuration and operation flow of an embodiment of the present invention. As shown in (A) of Fig. 1, detection signals from respective types of sensors (for example, and intake air pressure sensor, a throttle position sensor, a coolant temperature sensor, an atmospheric pressure sensor, and an intake air temperature sensor) for detecting an operating condition of an engine and a crank pulse signal for detecting the rotation of a crankshaft to thereby calculate an engine rotational speed and a crank angle are inputted into an ECU (engine control unit) . The ECU performs operation controls on such as ignition timing and fuel injection based on predetermined programs and maps according to these signals and outputs an abnormality indication signal to illuminate an indication lamp so as to indicate the presence of an abnormal condition when any abnormality is detected which results from disconnection and short circuit. In addition, when an abnormal condition is detected at the time of startup, a startup disablement indication is implemented. As shown in (B) of Fig. 1, in this flow of startup disablement indicating operation, firstly, whether or not the abnormality was detectedby a self-diagnosis is determined (step T1) . This is a step for determining whether or not a certain failure such as disconnection or short circuit of the sensors has been detected. If an abnormality is determined in this step T1, an abnormality indication is implemented by illuminating, for example, a red lamp. Next, whether or not a crank pulse signal exists, that is, an engine is rotating when the abnormality is occurring (when YES in T1) is determined (step T2). Thus, whether or not the engine has been operated to be put in a startup condition is determined. If the engine is in the startup condition (when YES in T2), a startup disablement indication is implemented (step T3). This startup disablement indication can be, for example, a red lamp flashing indication by changing the indication modes of the red lamp. Thus, the user can be aware that the engine is in the operation disablement condition. Industrial Applicability Ashas been described here to fore, in the present invention , in the event that the engine is started up in the state that a certain abnormal condition is self-detected, since the rotation of the engine is detected by the crank pulse signal, that the abnormality is detected at the time of startup can be detected by the input of the crank pulse signal, whereby a startup disablement indication signal can be outputted so as to indicate that a startup is not possible. Thus, a startup disablement indication can be implemented without using on/off signals of the starter switch but with a simple configuration using simple and inexpensive wiring and circuits. WE CLAIM; 1. An improved self-diagnosis indication system used particularly on a vehicle comprising an ECU for out-putting an operation control signal by means of signals from respective types of sensors for detecting an operating condition and for out-putting a startup disablement indication signal in a state that an abnormal condition is self-detected at the time of startup by means of a crank pulse signal for detecting a rotation of a crank shaft characterized in that: a startup disablement indication signal is outputted when a crank pulse signal is inputted in the state that an abnormal condition is a self-detected. 2. A self-diagnosis indication system as set forth in claim 1, having abnormality indicating means for indicating the abnormal condition so self-detected, whereby a startup disablement condition is indicated by changing indication modes of the abnormality indicating means by the startup disablement indication signal. To a self-diagnosis indication system for performing a startup disablement indication when an abnormal condition is self-detected at the time of startup without using on/off signals from a starter switch. There is provided a self-diagnosis indication system for outputting an operation control signal from an ECU by allowing signals from respective types of sensors for detecting an operating condition and a crank pulse signal for detecting a rotation of a crankshaft to enter the ECU and outputting a startup disablement indication signal in a state that an abnormal condition is self-detected at the time of startup, the self-diagnosis indication system being characterized in that a startup disablement indication signal is outputted when a crank pulse signal is inputted in the state that an abnormal condition is self-detected at the time of startup.

Full Text

SPECIFICATION
SELF-DIAGNOSIS INDICATION SYSTEM
Technical Field
The present invention relates to a self diagnosis
indication system (a diagnosis indication system) such as
provided on automobiles and/or motorcycles.
Background Art
The configuration and operation flow of a conventional
self-diagnosis indication system is shown in Fig. 2.
As shown in (A) of Fig. 2, detection signals fromrespective
types of sensors for detecting an operating condition of an
engine, an on/off signal from a starter switch and a crank pulse
signal for detecting the rotation of a crankshaft to thereby
calculate an engine rotational speed and a crank angle are
inputted into an ECU (engine control unit). The ECU performs
operation controls on such as ignition timing and fuel injection
based on predetermined programs and maps according to these
signals and outputs an abnormality indication signal to
illuminate an indication lamp so as to indicate the presence
of an abnormal condition when any abnormality is detected which
results from disconnection and short circuit. In addition,
when an abnormal condition is detected at the time of startup,
a startup disablement indication is implemented.
In this startup disablement indicating operation, as
shown in (B) of Fig. 2, whether or not the abnormality was detected
by a self-diagnosis is determined (step S1), and whether or
not the abnormality was detected at the time of startup is
determined by judging whether or not the starter switch was
switched on when the abnormal condition occurred (step S2),
and in the event that it was at the time of startup, then a
startup disablement indication is implemented (step S3).
However, with the conventional self-diagnosis indication
system, since the startup condition is determinedby using on/of f
signals of the starter switch, the determination means and signal
wiring become complex and costs are also increased.
The present invention was intended to deal with the
related art and an object thereof is to provide a self-diagnosis
indication system for performing a startup disablement
indication when an abnormal condition is self-detected at the
time of startup without using on/off signals from a starter
switch.
Disclosure of the Invention
With a view to attaining the object, according to the
present invention there is provided a self-diagnosis
indication system for outputting an operation control signal
from an ECU by allowing signals from respective types of sensors
for detecting an operating condition and a crank pulse signal
for detecting a rotation of a crankshaft to enter the ECU and
outputting a startup disablement indication signal in a state
that an abnormal condition is self-detected at the time of
startup, the self-diagnosis indication system being
characterized in that a startup disablement indication signal
is outputted when a crank pulse signal is inputted in the state
that an abnormal condition is self-detected.
According to this configuration, in the event that an
engine is started up in a state that a certain abnormal condition
is self-detected, since the rotation of the engine is detected
by the crank pulse signal, that the abnormality is detected
at the time of startup can be detected by the input of the crank
pulse signal, whereby a startup disablement indication signal
can be outputted so as to indicate that a startup is not possible
Thus, a startup disablement indication can be implemented
without using on/off signals of the starter switch but with
a simple configuration using simple and inexpensive wiring and
circuits.
According to a preferred configuration example, the
self-diagnosis indication system has an abnormality indicating
means for indicating the abnormal condition so self-detected,
whereby a startup disablement condition is indicatedby changing
indication modes of the abnormality indicating means by the
startup disablement indication signal.
According to this configuration, an abnormal condition is indicated by
illuminating, for example, an indication lamp when the abnormal
condition is self-detected, and when a startup is attempted in this
abnormal condition, the indication modes of the indication lamp are
changed, for example, to cause the indication lamp to flash so as to
indicate a startup disablement condition.
STATEMENT OF INVENTION
According to this invention there is provided an improved self-diagnosis
indication system used particularly on a vehicle comprising an ECU for
out-putting an operation control signal by means of signals from
respective types of sensors for detecting an operating condition and for
out-putting a startup disablement indication signal in a state that an
abnormal condition is self-detected at the time of startup by means of a
crank pulse signal for detecting a rotation of a crank shaft characterized
in that: a startup disablement indication signal is outputted when a
crank pulse signal is inputted in the state that an abnormal condition is
a self-detected.
BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS
Fig. 1 is explanatory drawings depicting the configuration and operation
flow of an embodiment of the present invention.
Fig. 2 is explanatory drawings depicting the configuration and operation
flow of a conventional abnormality indication system.
Mode for Carrying out the Invention
Fig. 1 shows explanatory diagrams depicting the configuration and
operation flow of an embodiment of the present invention.
As shown in (A) of Fig. 1, detection signals from respective types of
sensors (for example, and intake air pressure sensor, a throttle position
sensor, a coolant temperature sensor, an atmospheric pressure sensor,
and an intake air temperature sensor) for detecting an operating
condition of an engine and a crank pulse signal for detecting the rotation
of a crankshaft to thereby calculate an engine rotational speed and a
crank
angle are inputted into an ECU (engine control unit) . The ECU
performs operation controls on such as ignition timing and fuel
injection based on predetermined programs and maps according
to these signals and outputs an abnormality indication signal
to illuminate an indication lamp so as to indicate the presence
of an abnormal condition when any abnormality is detected which
results from disconnection and short circuit. In addition,
when an abnormal condition is detected at the time of startup,
a startup disablement indication is implemented.
As shown in (B) of Fig. 1, in this flow of startup
disablement indicating operation, firstly, whether or not the
abnormality was detectedby a self-diagnosis is determined (step
T1) . This is a step for determining whether or not a certain
failure such as disconnection or short circuit of the sensors
has been detected. If an abnormality is determined in this
step T1, an abnormality indication is implemented by
illuminating, for example, a red lamp.
Next, whether or not a crank pulse signal exists, that
is, an engine is rotating when the abnormality is occurring
(when YES in T1) is determined (step T2). Thus, whether or
not the engine has been operated to be put in a startup condition
is determined. If the engine is in the startup condition (when
YES in T2), a startup disablement indication is implemented
(step T3). This startup disablement indication can be, for
example, a red lamp flashing indication by changing the
indication modes of the red lamp. Thus, the user can be aware
that the engine is in the operation disablement condition.
Industrial Applicability
Ashas been described here to fore, in the present invention ,
in the event that the engine is started up in the state that
a certain abnormal condition is self-detected, since the
rotation of the engine is detected by the crank pulse signal,
that the abnormality is detected at the time of startup can
be detected by the input of the crank pulse signal, whereby
a startup disablement indication signal can be outputted so
as to indicate that a startup is not possible. Thus, a startup
disablement indication can be implemented without using on/off
signals of the starter switch but with a simple configuration
using simple and inexpensive wiring and circuits.
WE CLAIM;
1. An improved self-diagnosis indication system used particularly
on a vehicle comprising an ECU for out-putting an operation
control signal by means of signals from respective types of
sensors for detecting an operating condition and for out-putting
a startup disablement indication signal in a state that an
abnormal condition is self-detected at the time of startup by
means of a crank pulse signal for detecting a rotation of a crank
shaft characterized in that: a startup disablement indication
signal is outputted when a crank pulse signal is inputted in the
state that an abnormal condition is a self-detected.
2. A self-diagnosis indication system as set forth in claim 1,
having abnormality indicating means for indicating the
abnormal condition so self-detected, whereby a startup
disablement condition is indicated by changing indication
modes of the abnormality indicating means by the startup
disablement indication signal.
To a self-diagnosis indication system for performing a startup
disablement indication when an abnormal condition is
self-detected at the time of startup without using on/off signals
from a starter switch.
There is provided a self-diagnosis indication system for
outputting an operation control signal from an ECU by allowing
signals from respective types of sensors for detecting an
operating condition and a crank pulse signal for detecting a
rotation of a crankshaft to enter the ECU and outputting a startup
disablement indication signal in a state that an abnormal
condition is self-detected at the time of startup, the
self-diagnosis indication system being characterized in that
a startup disablement indication signal is outputted when a
crank pulse signal is inputted in the state that an abnormal
condition is self-detected at the time of startup.

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Patent Number

224440

Indian Patent Application Number

01038/KOLNP/2004

PG Journal Number

42/2008

Publication Date

17-Oct-2008

Grant Date

14-Oct-2008

Date of Filing

21-Jul-2004

Name of Patentee

YAMAHA HATSUDOKI KABUSHIKI KAISHA

Applicant Address

2500 SHINGAI, IWATA-SHI, SHIZUOKA 438-8501

Inventors:

#	Inventor's Name	Inventor's Address
1	MASASHI SUZUKI	C/O YAMAHA HATSUDOKI KABUSHIKI KAISHA, 2500 SHINGAI, IWATA-SHI, SHIZUOKA 438-8501

PCT International Classification Number

F02D 45/00

PCT International Application Number

PCT/JP03/00504

PCT International Filing date

2003-01-22

PCT Conventions:

#	PCT Application Number	Date of Convention	Priority Country
1	2002-19851	2002-01-29	Japan