In the Cydia description, Bell states that Ignition is primarily meant for the iPad, and that iPhones are not really supported. He does, however, acknowledge that the iPhone 6 Plus is a viable candidate for Ignition. In the video walkthrough above, I’m using Ignition on my iPhone 6 Plus, and I find that it works great. The default Ignition installation directory on OS X is /usr/local/ignition, but this is configurable. Ignition will need a user name to be installed under. The user needs to already exist on the system. Select the platform you wish to install. The rest of this guide will assume Ignition as the platform.

If your car is compatible, you can add a car key to the Wallet app on your iPhone.

What you need to add a car key to the Wallet app

  • A compatible car. To find out if your car is compatible with the Wallet app, contact the car's manufacturer or your dealership.
  • iPhone XS or later with the latest version of iOS.
  • Apple Watch Series 5 or later with the latest version of watchOS.
  • Be the owner of the account provided by your car's manufacturer and make sure that your car is connected to the account. The manufacturer or dealership can help you with this.
  • Sign in on your iPhone with your Apple ID.
  • Set up a passcode on your iPhone so that you can authenticate using Face ID, Touch ID, or your passcode.

How to add car keys to the Wallet app on your iPhone

  1. Make sure that your car is associated with the account provided by the car's manufacturer.
  2. Open the car manufacturer's app and follow the instructions to set up a key.
  3. When the app sends you to the Wallet app, tap Continue.
  4. Place your iPhone on the key reader as shown in the onscreen instructions, then wait for your iPhone and car to pair.
  5. Tap Done.

Depending on your vehicle, you might be able to add car keys from a link that your car maker sends to you in an email or text message, or by following steps on your car's information display:

Add car keys from an email

When you add your car to the account that's provided by its manufacturer, you receive an email that will help you begin the car key process. Tap the link in the email, then follow steps 3–5 from above in the Wallet app.

Add car keys using your car's information display

Navigate to the key section of your car's information display, then follow the onscreen instructions. When prompted, follow steps 3–5 from above in the Wallet app.

If you get a new iPhone or reset your current iPhone, you must set up car keys in the Wallet app again.

Ignition Apple Music

How to add car keys to your Apple Watch

  1. Add the car keys to the Wallet app on your iPhone that's paired with your Apple Watch.
  2. Open the Watch app on your iPhone.
  3. In the My Watch tab, scroll down and tap Wallet & Apple Pay.
  4. Tap Add next to the card for your car key.
Apple

Unlock or start your car with your Apple device

Apple Initial Ipo

To unlock your car, hold your iPhone or Apple Watch near the car's door handle.

To start your car, place your iPhone in the car's key reader, or hold your Apple Watch near the reader. Then press the car's start button.

Use Express Mode to quickly unlock or start your car

Express Mode is turned on by default when you add a car key to the Wallet app. It lets you automatically unlock your car door and allows you to quickly start the vehicle. If you leave your car, hold your Apple device near the door handle to lock it.

To turn off Express Mode:

  1. Open the Wallet app on your iPhone.
  2. Tap the card for your car key.
  3. Tap the More button .
  4. Turn off Express Mode.

If you turn off Express Mode, you must authenticate each time you use your Apple device as a car key:

  • On your iPhone, open the Wallet app and tap the card for your car key. Hold your iPhone near the car's door handle or key reader, then use your passcode, Face ID, or Touch ID to proceed.
  • On your Apple Watch, double-click the side button to access your cards. Tap the card for your car key, then hold your watch near the car's door handle or key reader.

If your iPhone needs to be charged

If your iPhone needs to be charged, you can still use it to unlock and start your car.

When your iPhone battery is very low, it enters power reserve mode. With Express Mode on, you can use your car keys for up to five hours after your iPhone goes into power reserve.

To see if car keys are available, press the side button on your iPhone.

How to share your car key with someone else

  1. Open the Wallet app on your iPhone.
  2. Tap the card for your car key.
  3. Tap the More button .
  4. Tap Invite.
  5. Tap Set Access, then select the level of restrictions that you want to place on the shared car key.
  6. Tap Invite. A new message appears.
  7. Begin typing a person's name in the message's To field, then tap their name when it appears. If the recipient isn't in your contacts, you can type a phone number.
  8. Tap the Send button .

Car key sharing invitations can only be sent via iMessage. The person you share a car key with must have a compatible iPhone, and they need to be signed in with their Apple ID. They also need to have a passcode turned on.

When your recipient taps on the invitation on their iPhone or Apple Watch, the Wallet app opens and tells them how to add and use the car key.

Apple

Your car's manufacturer might limit the number of people you can share a key with.

Delete or revoke a car key

To delete the car key from your Apple devices:

  1. Open the Wallet app on your iPhone.
  2. Tap the card for your car key.
  3. Tap the More button .
  4. Tap Remove This Car Key.
  5. Tap Remove to confirm.

To revoke access to a car key that you've shared:

  1. Open the Wallet app on your iPhone.
  2. Tap the card for your car key.
  3. Tap the More button .
  4. Tap the name of a person you've shared the car key with.
  5. Tap Revoke Access. The person receives a notification telling them that the car key has been revoked.

If you lose your Apple device

If you think your iPhone or Apple Watch has been lost or stolen, you can use iCloud.com or the Find My app on another Apple device to keep your car key information safe.

Apple Initiate Return

Learn what to do if your iPhone is lost or stolen, or if your Apple Watch is lost or stolen.

Firewood and combustion of wood heat values - for species like Pine, Elm, Hickory and more

Type of wood - whether it is hardwood or softwood - burned in the combustion process is important for the heat value and the energy efficiency.

Hardwoods have less resin and burn slower and longer. Softwoods burn quickly. In addition the seasoned length influences on the fuel efficiency. Seasoning the wood refers to the allowed drying time before combustion.

Wood need to be dried at least 4 to 6 months before use.

Apple Initial Share Price

Densities and heat values of some common wood species are indicated in the table below. Note that the volume of a stack of firewood varies considerably on whether or not it is split and how it is stacked. The moisture content also play a role - the values below are based on a average moisture content of 20%.

For full table - rotate the screen!

Wood SpeciesDensity of Dry Wood
(lb/ft3)
Weight of Dry Cord
(lb/cord)
Recoverable Heat Value of Cord
(Dry Wood)
(millions Btu/cord)		Heat Value of Cord
(Green Wood)
(millions Btu/cord)		Units of Green Wood needed to produce 1 Million (cord/Btu's)
Apple48.7410026.518.60.054
Ash, white22.3
Aspen27229014.710.30.097
Balsam Fir26.3224014.310.00.10
Basswood24.8211013.59.50.106
Beech44.237602416.80.060
Birch21.7
Black Ash35.2299019.113.40.075
Black Spruce29.2248015.911.10.090
Box elder32.9280017.912.50.080
Buckeye13.4
Butternut15.4
Catalpa16.4
Cherry36.7312020140.071
Chestnut12.9
Coffee tree21.6
Cottonwood24.8211013.59.50.106
Dogwood27.0
Douglas Fir26.4
East Hop hornbeam50.2427027.319.10.052
Elm35.9305019.513.70.073
Hackberry38.2325020.814.60.069
Hemlock29.2248015.911.10.090
Hickory50.9433027.719.40.052
Ironwood26.0
Jack Pine31.4267017.112.00.084
Larch - Eastern18.7
Locust27.3
Lodgepole pine19.3
Maple21.6
Mulberry25.8
Norway Pine31.4267017.112.00.084
Osage Orange32.9
Paper Birch37.4318020.314.20.070
Pinon Pine33.5
Ponderosa Pine28238015.210.60.094
Redcedar - east19.8
Red Oak44.237602416.80.060
Red Maple34.4292018.713.10.076
Spruce16.0
Sucamore19.5
Sugar Maple44.237602416.80.060
Tamarack38.2325020.814.60.069
Tanarack pine21.2
Yellow Birch43.4369023.616.50.061
Yellow pine22.0
Walnut - black21.5
White Ash43.4369023.616.50.061
White Oak47.2401025.718.00.056
White Pine26.3224014.310.00.100
Willow13.2
  • 1 ft (foot) = 0.3048 m
  • 1 lb = 0.4536 kg
  • 1 lb/ft3 = 16.018 kg/m3
  • 1 Btu (British thermal unit) = 1,055.06 J = 107.6 kpm = 2.931x10-4 kWh = 0.252 kcal = 778.16 ft lbf = 1.055x1010 ergs = 252 cal = 0.293 watt hour

Note that in the table above 1 net cord volume = 85 ft3 is used to convert between the 'Density' and 'Weight of Cord' column (1 stacked cord volume = 128 ft3). Be aware that the densities used for the wood species varies significantly. The densities used above is for natural dried wood where the average moisture content is approximately 20%.

Heat values of cords with dry wood can be estimated by adding 10% to the green wood cords values.

Recoverable heat values are calculated with a stove efficiency of approximately 65%.

How to Calculate the Combustion Heat in MJ/kg from the Table above

  1. calculate 'Density of Dry Wood' in kg/m3 by multiplying lb/ft3 with 16.018
  2. calculate 'Weight of Dry Wood' in kg/cord by multiplying lb/cord with 0.4536
  3. calculate 'Recoverable Heat Value of Cord (Dry Wood)' in MJ/cord by multiplying Millions Btu/cord with 1055.06
  4. calculate 'Recoverable Heat Value per kg (Dry Wood)' in MJ/kg by dividing 3 with 2

Example - Red Oak

Apple Ignite

  1. 'Density of Dry Wood' : 44.2 (lb/ft3) 16.018 = = 708 (kg/m3)
  2. 'Weight of Dry Wood' : 3760 (lb/cord) 0.4536 = 1705.5 (kg/cord)
  3. 'Recoverable Heat Value of Cord (Dry Wood)' : 24.0 (Millions Btu/cord) 1055.06 = 25304 (MJ/cord)
  4. 'Recoverable Heat Value per kg (Dry Wood)' : 25304 (MJ/cord) / 1705.5 (kg/cord) = 14.8 (MJ/kg)

The Combustion Process of Burning Wood

  1. Wood heats up to approximately 212 oF (100 oC) evaporating the moisture in it. There is no heating from the wood at this point
  2. Wood solids starts to break down converting the fuel gases (near 575 oF, 300 oC)
  3. From 575 oF to 1100 oF (300 - 600 oC ) the main energy in the wood is released when fuel vapors containing 40% to 60% of the energy burn
  4. After the burning of fuel vapors and the moisture is evaporated, only charcoal remains burning at temperatures higher than 1100o F

Ignition Apple Carplay

  • TC = 5 / 9 (TF - 32)

Related Topics

  • Heating - Heating systems - capacity and design of boilers, pipelines, heat exchangers, expansion systems and more
  • Combustion - Boiler house topics - fuels like oil, gas, coal, wood - chimneys, safety valves, tanks - combustion efficiency
  • Material Properties - Material properties for gases, fluids and solids - densities, specific heats, viscosities and more

Related Documents

  • Density of Various Wood Species - Density of various wood species - apple, ash, cedar, elm and more
  • Fire Wood - the Cord - The cord is the most common unit for purchasing fuel wood
  • Hardwood and Softwood Species - Species of hardwood and softwood
  • Heat Value - The gross (high) and net (low) heating values
  • Lumber - Weights - Weights of green, kiln dried and pressure treated lumber boards
  • Machine Stress Rated (MSR) and Machine Evaluated (MEL) Lumber - Grading of lumber in North America
  • Paraffins and Alkanes - Combustion Properties - Heating values, air/fuel ratios, flame speed, flame temperatures, ignition temperatures, flash points and flammability limits
  • Urban Tree Heights - Height of trees commonly used in towns and urban areas
  • Water Demand trees - Trees and their relative water demand
  • Wood - Moisture and Compressive Strength - Red Spruce, Longleaf Pine and Douglas Fir - moisture content and their compressive strength
  • Wood and Bio Mass Heat - Combustion values of wet and dry wood - Btu/pounds, kJ/kg and kcal/kg
  • Wood Density and Moisture Content - Density of wood versus moisture content
  • Wood Species - Moisture Content and Weight - Weight of green and air-dried fire wood

Tag Search

  • en: heat value wood
  • es: madera calorífico
  • de: Heizwert Holz