Calculate power lossess against road gradients

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Discussion Overview

The discussion focuses on calculating power losses for a 60 cc single cylinder water-cooled engine when driving against a 5% road gradient. The context includes a school project involving the construction of a three-wheeler car intended to operate at a speed of 30 km/h.

Discussion Character

  • Homework-related, Technical explanation

Main Points Raised

  • One participant requests assistance in calculating power losses against a gradient.
  • Another participant asks for clarification on the context, including the vehicle type, speed, and purpose of the calculation.
  • A third participant suggests a method for calculating the power required to ascend a hill, involving the vehicle's vertical speed, mass, and gravitational acceleration, while stating that engine displacement and cooling are not relevant to this calculation.
  • The original poster confirms that the calculation is for a school project involving a three-wheeler car designed to travel at 30 km/h.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the calculation method, and there are varying perspectives on the relevance of certain parameters.

Contextual Notes

The discussion lacks specific details about the vehicle's mass and the exact parameters for the calculation, which may affect the power loss estimation.

Who May Find This Useful

This discussion may be useful for students or individuals interested in vehicle dynamics, engineering projects, or power calculations related to gradients.

Carvinos
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i want to calcculate the power lossess of a 60 cc single cylinder water cooled engine against the 5% road gradients.can anyone help?
 
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Carvinos said:
i want to calcculate the power lossess of a 60 cc single cylinder water cooled engine against the 5% road gradients.can anyone help?

Welcome to the PF.

What is the context of your question? What vehicle is this small engine in? What speed is the vehicle moving? Is this just a paper calculation, a simulation, or do you intend to build it for a school project?
 
To calculate the power required to drive up a hill at a certain speed, calculate the vehicle's vertical speed (speed*grade), and then multiply by the vehicle's mass and G. The engine's dispplacement and cooling are not relevant in this problem.

[tex]V_{h}=V_{tot}*Grade[/tex]

[tex]P_{req}=M*g*V_{h}[/tex]
 
thnx for ur response.this is basically a school project and we have to build a three wheeler car, 2 wheels at the front and one at the rear and it is to be driven at 30kmph.thnx a lot once again.
 

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