Vehicle Ergonomics -P4

8/10/2019 Vehicle Ergonomics -P4

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Project 4-Vehicle Ergonom

AE-545

EVALUATION OF ENTRY/EGRESS ENGINE AND CARGO COMPARTMENT

Submitted by:

VENKATA AMOL KOUSHIK CAVUTURUANISH K LNIKHIL KATKARPIYUSH MANDHANE

MADHUBABU RAVIPATI

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OBJECTIVE

To conduct human factors evaluations of: 1) entry/egress, and 2) usservice/maintenance functional features related to engine and trunkcompartmentsin a car, van, truck or a sports utility vehicle.

The objectives of this study is to use methods of observation andcommunication (interview) to evaluate several tasks and suggest proimprovements to reduce and eliminate problems and errors.

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VEHICLE SELECTED: SAAB 93 (2004)3


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PROCEDURE:

Six drivers(4 male height ranging from 5.9 to 6.2 in

ranging from 5.3 to 5.8 in) were asked to perfothe three tasks. Drivers were observed and tcomplete each task was recorded.

The task was carefully monitored by our teafeedback of the subjects were noted down

All problems, errors, and comments were recordtask.

Drivers were asked to rate each task on a scale o

(10 = extremely easy, 1 = extremely hard).

The data was collected for discussion and impro

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TASK-1:

Entry- Opening outside door handle and entry intodriver's seat.

Procedure:

1. Extend arm and grasp door handle

2. Open the door3. Enter the vehicle

4. Sit in the driver seat

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Evaluation questionnaire:

1. Appropriate height of outside door handle and location( close to the dopening)?

2. Proper handle grasp & clearance for all drivers(in all conditions)?3. Is it easy to open the door or more effort is required?

4. Space available for the driver to slide into the seat?

Watched out for:

1. Ease of reaching the door handle, awkward hand angles, excessive heease of getting in the car.

Evaluation on scale:

10-point scale (10 = Very Easy and 1 = Very Difficult)

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PHOTOGRAPHS:7


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OBSERVATION OF TASK -1:

SUBJECT1(M) SUBJECT2(M) SUBJECT 3(M) SUBJECT 4(M) SUBJECT

RATING 8 9 10 9 7

TIMEDURATION

5.1 sec 4.8 sec 3.7 sec 4.1 sec 5.5 sec

ERROROCCURED

0 0 0 0 0

Average ratings : 8.83, Average Error: 0, Average time required: 4.63 s

Door handle placed at appropriate height from the ground and cdoor opening making it easy accessible and operable for all the d

Rocker width is appropriate making it easy for all the drivers to slide

Little uncomfortable for tall drivers to get in& get out of the car.

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IMPROVEMENTS FOR TASK -1 Ample Knee clearance should be provided making it east for the tall drive

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TASK 2:

Engine compartment task -Opening the hood and check out th

oil and windshield washer fluid levels

Evaluation questionnaire:

1. Proper location, visibility & labeling of hood release control.

2. Proper location & visibility of secondary hood release.

3. Easy to locate & distinguish engine oil dipstick & washer fluid le

4. Easy to operate without excessive leaning & effort.

Watched out for:

Ease of operation, excessive leaning to reach the levers.

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PHOTOGRAPHS:

Primary hood

release control

Secondaryhood release

control

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OBSERVATION OF TASK -2:

SUBJECT 1 SUBJECT 2 SUBJECT 3 SUBJECT 4 SUBJECT

RATING 7 9 8 5 9 TIME DURATION 44.3 sec 28.5 sec 33.6 57.9 25.5

ERROROCCURED

2 1 1 3 1

Average ratings : 7.5, Average Error : 1.66, Average time required: 38.18

Hood release control located at an expected location, visibility & labeling is p

Difficult to see the secondary hood release but easy to operate.

No problems with the hood prop rod as it was hydraulic and the subjects liked

Easy to find, understand & reach the engine oil dipstick & wiper fluid containe

service parts were indicated in yellow, and they are placed very close to the

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IMPROVEMENTSFORTASK-2:

Hood Release lever should be positioned in a visible position &should pop out for easy visibility and ease of access.

Wiper washer level indicator should be provided ( a transparemeter cap which indicates fuel level) should be provided.

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TASK -3:

Truck/cargo compartment tasks: Opening the trunk and loading a he

small bag.

Evaluative questionnaire:

1. Proper location, visibility & labeling of trunk release lever.

2. Proper illumination of trunk.

3. Lift over height above the bumper.

4. Horizontal distance to load.

Watched out for:

Ease of loading & unloading, excessive body bending.

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PHOTOGRAPHS:

All subjects couldnt find the placed on the drivers side door it was clearly visible and easy tbending.

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OBSERVATION OF TASK -3

SUBJECT 1 SUBJECT 2 SUBJECT 3 SUBJECT 4 SUBJECT

RATING 8 9 10 9 8

TIME DURATION 28.3 27.4 29.7 31.1 34.6

ERROROCCURED

1 1 0 1 1

Average ratings : 8.3, Average error: 1.16, Average time required: 30.5

all the subjects couldnt locate the trunk release control as it was plaunfamiliar location.

Illumination was provided.

Trunk loading height is okay for all the subjects.

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IMPROVEMENTS FOR TASK - 3

Gooseneck hinges intrude into the trunk area. Hydraulic lift gate should beprovided.

backlight should be attached with trunk for more excessive space to load& unload big heavy bags.

More pockets should be provided for accessories like umbrellas.

Automatic trunk opening would be a nice feature.

When the horizontal loading distance is high & inevitable a flat support hasto be provided to slide the heavy bags or else the bags have to be lifted

entirely to load & unload.

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0

5

10

15

20

25

30

35

40

45

TASK 1 TASK 2 TASK 3

TIMESECOUNDS

Rating vs Error vs Time

AVERAGE RATINGS AVERAGE ERROR AVERAGE TIME

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CONCLUSION:

After performing the tests, it can be concluded that, Saab 93 is

packaged car, all the ratings were above average and the subjectable to do the tasks with relative ease.

However, Some suggestions were provided which we think will besatisfy most people altogether making it a good package.

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Vehicle Ergonomics -P4

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