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COOLING SYSTEM FOR EMDAP

CVT

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1a Objective

To reduce excessive heat from transmission

lubrication

To ensure transmission oil under target

operation temperature

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1a Basic Analysis

Based on previous study mainly SAE Technical Paper 2000-01-

1872 and other SAE papers target lubrication operation

should be in range of 65 80 degree Celsius to ensure

minimal transmission efficiency losses.

Several SAE Papers Show Splash temperature* can goes up to

150 C at normal operation temperature under heavy load.

These temp being used as a guideline for max temperature to

be cool for EMDAP CVT cooling system.

* V-Belt temp. at the times it touch lubricant

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1a Basic Analysis

Basic Equation:

Q =

= Heat Load or Heat Energy release

= Mass Flow rate = Fluid Specific Heat

= System Temperature Difference

And

= T/R = Heat Transfer Rates

R = Thermal resistance

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1a Basic Analysis

Basic system schematic

Qh = Heat load from Transmission

Qc = Heat load from energy release

= Heat transfer rate from Heat Exchanger

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1b Cooling System Component

Main Component

Oil Cooler

Hydraulic or Oil Pump

Hydraulic Fitting

Secondary Component

Oil Filter

Oil filter adapter

Main component

require to reduce

transmission oil

temperature

To reducetransmission oil

uncleanliness

before it return to

transmission box

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1b Hydraulic Oil Pump

Specification:

12 Volt DC Current

Maximum Pressure 50PSI

Maximum Continues Operating

Temperature 120C

Flow rate 2 Gpm

Weight 2.5kg

Pump Head Port 3/8 NPT

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1b Oil Cooler

Specification:

12 Row oil cooler

Size 26cmx18cmx4cm

Maximum Pressure 200PSI

Materials Aluminum

Heat Rejection 10kw

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1b Oil Filter & Relocate

Specification:

Proton Wira Oil Filter type

OEM oil filter replacement

Oil Relocation Kit with temperature

and Oil Sensor adaptor

Suitable for Mitsubishi, Honda and allJapan Domestic Car Manufacture

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Main n Secondary Cooling Component

Hydraulic

Oil Pump

Oil Cooler

Oil Filter&

Oil Filter

Relocate

Hydraulic

Fitting

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2a Simple Schematic Drawing

Oil Filter Oil Cooler

Hydraulic

Oil Pump

Hydraulic

Fitting

M

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2b Cooling System Setup for Test Rig

Oil

Filter Oil

Cooler

Hydrauli

c Oil

Pump

Hydraulic

Fitting

M

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2b Cooling System Setup for Vehicle

M

Oil

Filter

Oil

Cooler

HydraulicOil Pump

Hydraulic

Fitting

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2b Cooling System Setup for Vehicle

Setup number 1 being used for vehicle cooling system setup due to no

cooling fan being used to push/ suck cool air towards oil cooler.