Designing a Hybrid Engine for a Passenger Car: Where to Begin?

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Discussion Overview

The discussion revolves around the design of a hybrid engine for a passenger car, focusing on the initial steps and considerations involved in the design process. Participants explore various aspects of hybrid engine design, including performance parameters, existing models, and assumptions needed for the project.

Discussion Character

  • Homework-related
  • Exploratory
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses uncertainty about how to begin designing a hybrid engine, noting they have a net brake power of 100 kW.
  • Another participant suggests looking at existing hybrid engine designs in a similar power range and researching the components used in those vehicles, such as batteries and transmissions.
  • Some participants discuss the open-ended nature of "design" and the potential complexity involved in creating a physical model or prototype.
  • There is mention of the need to assume various parameters, such as mechanical efficiency and clearance volume, but uncertainty remains about acceptable ranges for these assumptions.
  • One participant questions the consistency of another's claims about their knowledge of vehicle performance, highlighting a perceived contradiction in their statements.
  • Some participants emphasize the importance of showing effort in the school project and not expecting others to do the work.

Areas of Agreement / Disagreement

Participants generally agree on the need for research into existing hybrid designs and the complexity of the project. However, there is disagreement regarding the level of knowledge and effort expected from the original poster, with some suggesting they are not adequately prepared.

Contextual Notes

Participants note the need for assumptions in the design process, but specific limitations or dependencies on definitions are not fully explored. The discussion reflects varying levels of understanding and expectations regarding the project.

Who May Find This Useful

Students or individuals interested in automotive engineering, hybrid vehicle design, or those working on similar school projects may find this discussion relevant.

eng/mahmoud
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i need to design a hybrid engine for passanger car from A to Z,
i've only net brake power which is 100 kw .
but i don't know how can i start in design ? this the problem!:confused:
i could use any help
thanks
 
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eng/mahmoud said:
i need to design a hybrid engine for passanger car from A to Z,
i've only net brake power which is 100 kw .
but i don't know how can i start in design ? this the problem!:confused:
i could use any help
thanks

What are you learning in school that will help you with this design?
 
i learned about engine performance and total resistance on the vehicle .
actually I've learned almost everything about vehicle,
how can i start ? this is the question :confused:
 
eng/mahmoud said:
i learned about engine performance and total resistance on the vehicle .
actually I've learned almost everything about vehicle,
how can i start ? this is the question :confused:

Since this is for a school project, we will not do your project for you. Maybe start by looking at existing designs for hybrid engines in that power range. What hybrid vehicles have engines similar to the one you are to design? What batteries do they use? What do they use for transmissions?

Please show some effort -- it is your schoolwork project, after all. :smile:
 
eng/mahmoud said:
i need to design a hybrid engine for passanger car from A to Z...
"Design" is pretty open-ended. If the end result is to be a physical model/prototype, and you are truly responsible for "A to Z", then you have many months or years of work ahead of you.

"Hybrid engine" also leaves a lot open to interpretation. If you are referring to hybrid in the sense of vehicles such as the Toyota Prius, then it is a hybrid powertrain -- a conventional internal combustion engine with a high-voltage electrical generator and an electric motor. The manner in which the components work together varies by manufaacturer and model. Some vehicles use the ICE for primary propulsion, with the electric motor only working as a booster of sorts.

eng/mahmoud said:
i learned about engine performance and total resistance on the vehicle .
actually I've learned almost everything about vehicle,
how can i start ? this is the question :confused:
Sounds like you've already started. You say that you have the required engine parameters and the vehicle data. Where exactly are you stuck?
 
berkeman said:
Since this is for a school project, we will not do your project for you. Maybe start by looking at existing designs for hybrid engines in that power range. What hybrid vehicles have engines similar to the one you are to design? What batteries do they use? What do they use for transmissions?

Please show some effort -- it is your schoolwork project, after all. :smile:

thanks a lot,:smile:
 
pantaz said:
"Design" is pretty open-ended. If the end result is to be a physical model/prototype, and you are truly responsible for "A to Z", then you have many months or years of work ahead of you.

"Hybrid engine" also leaves a lot open to interpretation. If you are referring to hybrid in the sense of vehicles such as the Toyota Prius, then it is a hybrid powertrain -- a conventional internal combustion engine with a high-voltage electrical generator and an electric motor. The manner in which the components work together varies by manufaacturer and model. Some vehicles use the ICE for primary propulsion, with the electric motor only working as a booster of sorts.


Sounds like you've already started. You say that you have the required engine parameters and the vehicle data. Where exactly are you stuck?

yes I've already start collecting a general information about parameter i need ,but i only have the brake power and i have to assuming a lot of parameter such as "mechanical efficience and clearance volume ,etc" i need to know the acceptable rang for assuming .
thanks a lot for your help:smile:
 
eng/mahmoud said:
yes I've already start collecting a general information about parameter i need ,but i only have the brake power and i have to assuming a lot of parameter such as "mechanical efficience and clearance volume ,etc" i need to know the acceptable rang for assuming .
thanks a lot for your help:smile:

You said previously,
eng/mahmoud said:
... actually I've learned almost everything about vehicle...

Now you're saying that you know almost nothing about the vehicle. :confused:
 
Yes, it does appear that eng/mahmoud would like us to do his project for him. Guess he's not real familiar with how the PF operates...
 

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