Drive simulator operating method

• US 4,186,593 A
• Filed: 08/14/1978
• Issued: 02/05/1980
• Est. Priority Date: 08/16/1977
• Status: Expired due to Term

• Current Assignee: Kabushiki Kaisha Meidensha
• Original Assignee: Kabushiki Kaisha Meidensha
• Inventors: Watanabe, Youichi
• Primary Examiner(s): Myracle, Jerry W.
• Application Number:
  US05/933,613
• Time in Patent Office: 540 Days
• Field of Search: 73/117, 73/116, 73/134
• US Class Current: 73/118.01
• CPC Class Codes: G01M 17/0072 the wheels of the vehicle co-operating with rotatable rolls G01M17/022, G01M17/045, G01M17/065 take precedence

Abstract

A drive simulator operating method for permitting a test vehicle to run on a dynamometer system under conditions equivalent to actual vehicle running conditions. The drive simulator is operated under road load control on the basis of the data stored in a memory while the test vehicle runs on the dynamometer system under road load control in accordance with road load command values stored in a data recorder during actual running of the test vehicle on a test course.

Claims

1. A drive simulator operating method for permitting a test vehicle to run on the dynamometer system under conditions equivalent to actual vehicle running conditions, the method comprising the steps of

storing in a data recorder on the relationship between vehicle speed and any one of engine throttle opening, intake manifold pressure, and drive dynamometer shaft torque while actually driving the test vehicle on a test course,

storing in a memory data on the relationship between vehicle speed and road load corresponding to the torque absorbed in the dynamometer while driving the test vehicle on the dynamometer system under road load control in accordance with the data stored in the data recorder, and

operating the dynamometer under road load control in accordance with the data stored in the memory.

2. The drive simulator operating method as claimed in claim 1 including the step of

driving the test vehicle on the test course in accordance with a patterned drive mode.

3. The drive simulator operating method as claimed in claim 1 or 2 wherein

the test vehicle is driven solely by the dynamometer system in accordance with the data based on road load control stored in the memory data.

4. The drive simulator operating method as claimed in claim 1 or 2 wherein

the data stored in the memory is in accordance with actual road load variations in accordance with the actual test course including variations in acclivity, declivity, wind resistance and curvature of the road.

5. The drive simulator operating method as claimed in claim 1 or 2 comprising the

steps of obtaining the data on the relationship between vehicle speed and any one of the engine throttle opening, the intake manifold pressure and dynamometer shaft torque while the test vehicle is driven in accordance with patterned driving models.