Warning system for an engine
First Claim
1. A warning system for warning a lack of a working fluid for an engine, said engine having a magneto provided to generate a power supply, an ignition plug, ignition means responsive to said power supply for activating said ignition plug to spark, and warning means connected to said magneto for indicating said lack of the working fluid, comprising:
- sensing means for sensing said lack of the working fluid and for producing a lack detection signal when said lack is detected;
timer means for counting a predetermined time period and for producing a timer signal after said predetermined time period;
switching means responsive to said lack detection signal for producing one of an engine stopping mode signal and a warning mode signal before receiving said timer signal and for producing the other of said engine stopping mode signal and said warning mode signal after receiving said timer signal; and
control means responsive to said engine stopping mode signal for short-circuiting said ignition circuit to stop the operation of said engine and responsive to said warning mode signal for activating said warning means.
1 Assignment
0 Petitions
Accused Products
Abstract
A warning system for warning a lack of a working fluid for an engine. The engine is provided with an ignition unit supplied with an ignition power supply from a magneto. A sensing unit senses the lack of the working fluid and produces a detection signal. A warning element, connected to the magneto, receives a power supply to give a warning indicating the lack of the working fluid. A controller is responsive to the detection signal from the sensing unit for actuating the warning element to provide the warning without deteriorating a performance of the ignition unit.
12 Citations
13 Claims
-
1. A warning system for warning a lack of a working fluid for an engine, said engine having a magneto provided to generate a power supply, an ignition plug, ignition means responsive to said power supply for activating said ignition plug to spark, and warning means connected to said magneto for indicating said lack of the working fluid, comprising:
-
sensing means for sensing said lack of the working fluid and for producing a lack detection signal when said lack is detected; timer means for counting a predetermined time period and for producing a timer signal after said predetermined time period; switching means responsive to said lack detection signal for producing one of an engine stopping mode signal and a warning mode signal before receiving said timer signal and for producing the other of said engine stopping mode signal and said warning mode signal after receiving said timer signal; and control means responsive to said engine stopping mode signal for short-circuiting said ignition circuit to stop the operation of said engine and responsive to said warning mode signal for activating said warning means. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. A warning system for indicating a lack of a working fluid for an engine, having a magneto provided to generate a power supply, an ignition plug provided in a cylinder for igniting air and fuel mixture, and ignition means responsive to said power supply for activating said ignition plug to spark, comprising:
-
sensing means for producing a lack detection signal indicating the lack of the working fluid when an amount of the working fluid falls below a predetermined value; timer means for counting a predetermined time period after engine start and for generating a timer signal after said predetermined time period; switching means responsive to said lack detection signal and said timer signal for deciding an engine stopping mode when said lack is detected before said predetermined time period is lapsed and for deciding a warning mode when said lack is detected after said predetermined time period is lapsed, and for outputting a switching signal indicating one of said engine stopping mode and warning mode; and control means responsive to said switching signal for stopping said engine when said switching signal indicates said engine stopping mode or for warning said lack of working fluid when said warning mode is indicated by said switching signal. - View Dependent Claims (8)
-
-
9. A warning system for indicating a lack of a working fluid for an engine, having a magneto provided to generate a power supply, an ignition plug provided in a cylinder for igniting air and fuel mixture, and ignition means responsive to said power supply for activating said ignition plug to spark, comprising:
-
sensing means for producing a lack detection signal indicating the lack of the working fluid when an amount of the working fluid falls below a predetermined value; timer means responsive to said lack detection signal for counting a predetermined time period after said lack is detected and for generating a timer signal after said predetermined time period is lapsed; switching means responsive to said lack detection signal and said timer signal for producing a switching signal indicating a warning mode before said predetermined time period is lapsed and for producing a switching signal indicating a engine stopping mode after said predetermined time period is lapsed; and control means responsive to said switching signal indicating one of said mode for warning said lack of working fluid when said switching signal indicates said warning mode and for stopping said engine when said engine stopping mode is indicated by said switching signal. - View Dependent Claims (10)
-
-
11. A warning system for warning a lack of a working fluid for an engine having an ignition plug, a magneto for generating an ignition power supply including an arc discharging region and a glow discharging region, ignition means responsive to said ignition power supply of said arc discharging region for activating said ignition plug to spark, sensing means for sensing the lack of the working fluid and producing a detection signal and warning means connected to the magneto for warning the lack of the working fluid, comprising:
a controller responsive to said detection signal for actuating said warning means using said ignition power supply of said glow discharging region to provide the warning without deteriorating a performance of said ignition means. - View Dependent Claims (12, 13)
Specification