Method of indicating a shift operation of a manual transmission gear of a vehicle

• US 4,868,756 A
• Filed: 02/09/1987
• Issued: 09/19/1989
• Est. Priority Date: 08/09/1985
• Status: Expired due to Fees

• Current Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Original Assignee: Honda Giken Kogyo Kabushiki Kaisha (Honda Motor Company)
• Inventors: Asakura, Masahiko, Hasebe, Hiroshi, Kimura, Katsuhiko, Matsuura, Kouji, Seki, Yasunari, Kawanabe, Tomohiko
• Primary Examiner(s): NOT, DEFINED
• Application Number:
  US07/012,319
• Time in Patent Office: 953 Days
• Field of Search: 364/421.1, 364/431.1, 364/442, 434/71, 74/868, 74/766, 192/3.31, 340/52 D
• US Class Current: 701/123
• CPC Class Codes: B60R 16/0236 for economical driving
• CPC Class Codes: F16H 59/78 Temperature
• CPC Class Codes: F16H 61/0213 characterised by the method for generating shift signals
• CPC Class Codes: F16H 63/42 Ratio indicator devices
• CPC Class Codes: Y02T 10/84 Data processing systems or methods, management, administration

Abstract

A method for indicating a shift operation for a manual transmission gear includes a step for comparing a detected vehicle speed with a reference speed which is determined and changed on the basis of a detected engine temperature and a step for indicating the shift operation on this basis of a result of the comparison. When a temperature parameter relating to the engine operation is lower than a predetermined reference temperature value, the reference vehicle speed is raised so that the indication of the shift operation will not be generated.

Claims

1. A method for indicating a shift operation for a manual transmission gear in a vehicle having an engine, comprising the steps of:

(a) detecting a vehicle speed and a temperature of the engine mounted on the vehicle;

(b) determining a reference vehicle speed, said reference vehicle speed being set at a first value which is higher than a second value, said second value corresponding to a condition where the detected temperature of the engine is higher than a first reference engine temperature, said first value being set when the detected temperature of the engine is lower than said first reference engine temperature;

(c) indicating the shift operation in response to a comparison between the detected vehicle speed and said reference vehicle speed;

(d) comparing a detected engine temperature with a second reference engine temperature, said second reference engine temperature being lower than said first reference engine temperature; and

(e) raising said reference vehicle speed when the detected engine temperature is lower than said second reference engine temperature.

2. A method for indicating a shift operation for a manual transmission gear in a vehicle having an engine, comprising the steps of:

(a) detecting a vehicle speed and a temperature of the engine mounted on the vehicle;

(b) determining a reference vehicle speed 1 said reference vehicle speed being set at a first value which is higher than a second value, said second value corresponding to a condition where the detected temperature of the engine is higher than a first reference engine temperature, said first value being set when the detected temperature of the engine is lower than said first reference engine temperature;

(c) indicating the shift operation in response to a comparison between the detected vehicle speed and said reference vehicle speed;

(d) detecting an intake air temperature of the engine;

(e) comparing the detected intake air temperature of the engine with a reference intake air temperature, said reference intake air temperature being set a value lower than the first reference engine temperature; and

(f) raising the reference vehicle speed when the detected intake air temperature of the engine is lower than said reference intake air temperature.