Abstract An automatic examination system for motor vehicles can quickly and automatically examine whether an engine of an automobile or the like is good or bad without making contact with the body of the automobile or the like includes a receiver section disposed apart from the engine of the automobile or the like for receiving via a space either electrical signals or sonic signals transmitted from the engine, a period measurement section for measuring the respective periods between the respective signals received by the receiver section, a period difference calculator section for calculating the respective period differences between the respective periods measured by the period measurement section, and a good/bad decision section for deciding whether the engine is good or bad by comparing the respective period differences calculated by the period difference calculator section with a given reference value.
Inventors
👤 Kenji Sakai
👤 Takeshi Wakabayashi
👤 Kakumasa Fukuzawa
👤 Teruzo Hiraoka
Bibliographic Details
Application Number—
JurisdictionUS
Data Sourcegoogle_patents
Last Synchronized2026-10-28 10:38
CPC Classifications
G; G01; G01M; G01M15/00; G01M15/04; G01M15/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
115 words
An automatic examination system for motor vehicles comprising: a receiver section fixedly mounted on a floor of an examination station and disposed apart from an engine of a motor vehicle for receiving via space either electrical signals or sonic signals transmitted from said engine; a period measurement section for measuring the respective periods between said respective signals received by said receiver section; a period difference calculator section for calculating the respective period differences between said respective periods measured by said period measurement section; and a good/bad decision section for deciding whether said engine is good or bad by comparing said respective period differences calculated by the period difference calculator section with a given reference value.
Claim 2
Dependent Claim
115 words
An automatic examination system for motor vehicles comprising: a receiver section fixedly mounted on a floor of an examination station and disposed apart from an engine of a motor vehicle for receiving via space either electrical signals or sonic signals transmitted from said engine; a period measurement section for measuring the respective periods between said respective signals received by said receiver section; a period difference calculator section for calculating the respective period differences between said respective periods measured by said period measurement section; and a good/bad decision section for deciding whether said engine is good or bad by comparing said respective period differences calculated by the period difference calculator section with a given reference value.
Claim 3
Dependent Claim
39 words
An automatic examination system for motor vehicles as claimed in claim 1, further comprising a timing controller circuit for controlling timing of the operations in said period measurement section and period difference calculation section and said good/bad decision section.
Claim 4
Dependent Claim
41 words
An automatic examination system for motor vehicles as claimed in claim 1, further comprising an indicator section for indicating the results of decision as to whether said engine is good or bad, said decision being executed by said good/bad decision section.