Battery Key, Starter And Improved Crank

Patent metadata

Field	Value
Publication number	US-2019136818-A1
Application number	US-201816145475-A
Country	US
Kind code	A1
Filing date	Sep 28, 2018
Priority date	Oct 3, 2017
Publication date	May 9, 2019
Grant date	—

Abstract

A system for starting an engine of a vehicle has a fuel injector injecting fuel into a closed intake port to form an air fuel mixture. The system also includes an actuator rotating a crankshaft in a first direction to open the intake port by moving a piston within a cylinder coupled to the crankshaft. A combustion chamber defines between the cylinder and the port receiving the air fuel mixture through the intake port. The actuator rotates the crankshaft in a second direction to close the intake port. A spark plug ignites the air fuel mixture to start the engine. The engine also includes many other disclosed features.

First claim

What is claimed is:

1 . A system for starting an engine having a fuel injector, a starting actuator and a spark plug comprising:
a controller causing the fuel injector to injecting fuel into the engine to form an air fuel mixture; said controller causing the actuator to rotate a crankshaft in a first direction to move a piston within a cylinder coupled to the crankshaft; a combustion chamber defined between the cylinder and the piston receiving the air fuel mixture; said controller causing the actuator to rotate the crankshaft in a second direction opposite the first direction; a flywheel coupled to the crankshaft comprises a first track and a second track, said first track comprise a first plurality of teeth and said second track comprising a second plurality of teeth; and said controller causing the spark plug to ignite the air fuel mixture to start the engine.

2 . A system as recited in claim 1 wherein the actuator comprises a starter motor.

3 . A system as recited in claim 1 wherein the actuator rotates the crankshaft in the first direction so that the piston is in a first position, said first position not having the piston passing top dead center.

4 . A system as recited in claim 1 wherein the actuator rotates the crankshaft in the second direction to a second position, said second position not having the piston pass top dead center.

5 . A system as recited in claim 1 further comprising a flywheel coupled to the crankshaft comprises a first track and a second track, said first track comprise a first plurality of teeth and said second track comprising a second plurality of teeth, wherein the first plurality is equal to the second plurality.

6 . A system as recited in claim 5 wherein the first plurality and the second plurality comprise four teeth.

7 . A system as recited in claim 5 wherein the first plurality of teeth has a first tooth aligned with top dead center of a first piston and a second tooth aligned with top dead center of a second piston, wherein the second plurality of teeth has a first tooth aligned with top dead center of the first piston and a second tooth aligned with top dead center of the second piston.

8 . A system as recited in claim 7 wherein the first plurality of teeth has a third tooth and a fourth tooth after top dead center of the first piston and wherein the second plurality of teeth has a third tooth and a fourth tooth after top dead center of the second piston.

9 . A system as recited in claim 7 wherein the first plurality of teeth has a third tooth and a fourth tooth after top dead center of the first piston and between top dead center of the first piston and before top dead center of the second piston, and wherein the second plurality of teeth has a third tooth and a fourth tooth after top dead center of the second piston and between top dead center of the second piston and before top dead center of the first piston.

10 . A system as recited in claim 7 wherein the first plurality of teeth and the second plurality of teeth each have a first tooth aligned with top dead center of a first piston and a top dead center of a second piston.

11 . A system as recited in claim 5 wherein the first plurality of teeth has a first tooth aligned with top dead center of a first piston and a second tooth aligned with top dead center of a second piston and the second plurality of teeth has a first tooth aligned with top dead center of the first piston and a top dead center of the second piston, wherein the first tooth of the first plurality of teeth and the second tooth of the second plurality of teeth has a first width and the second tooth of the first plurality of teeth and the first tooth of the second plurality of teeth have a second width, said first width greater than the second width.

12 . A system as recited in claim 1 wherein the piston comprises a first piston and a second piston.

13 . A system as recited in claim 1 wherein further comprising a removable battery coupled to a battery receptacle and wherein said actuator is powered by the removable battery.

14 . A system as recited in claim 13 wherein a battery cell temperature of battery cells of the removable battery is higher than a vehicle temperature.

15 . A method of starting an engine of a vehicle comprising:
injecting fuel into a closed intake port to form an air fuel mixture; rotating a crankshaft in a first direction to open the intake port by moving a piston within a cylinder coupled to the crankshaft; receiving the air fuel mixture through the intake port in a combustion chamber defined between the cylinder and the port; rotating the crankshaft in a second direction to close the port; determining the first direction and the second direction of the crankshaft using a flywheel coupled to the crankshaft comprising a first track comprising a first plurality of teeth and a second track comprising a second plurality of teeth; and igniting the air fuel mixture to start the engine.

16 . The method of claim 15 wherein rotating the crankshaft comprises rotating the crankshaft in the first direction so that the piston is in a first position, said first position not having the piston passing top dead center and rotating the crankshaft in the second direction to a second position, said second position not having the piston pass top dead center.

17 . The method of claim 15 wherein the first plurality is equal to the second plurality.

18 . The method of claim 17 wherein the first plurality of teeth and the second plurality of teeth each comprise four teeth.

19 . The method of claim 17 wherein the first plurality of teeth has a first tooth aligned with top dead center of a first piston and a second tooth aligned with top dead center of a second piston, wherein the second plurality of teeth has a first tooth aligned with top dead center of the first piston and a second tooth aligned with top dead center of the second piston.

20 . The method of claim 19 wherein the first plurality of teeth has a third tooth and a fourth tooth after top dead center of the first piston and wherein the second plurality of teeth has a third tooth and a fourth tooth after top dead center of the second piston.

21 . The method of claim 19 wherein the first plurality of teeth has a third tooth and a fourth tooth after top dead center of the first piston and between top dead center of the first piston and before top dead center of the second piston, and wherein the second plurality of teeth has a third tooth and a fourth tooth after top dead center of the second piston and between top dead center of the second piston and before top dead center of the first piston.

22 . The method of claim 17 wherein the first plurality of teeth and the second plurality of teeth each have a first tooth aligned with top dead center of a first piston and a top dead center of a second piston.

23 . The method of claim 17 wherein the first plurality of teeth has a first tooth aligned with top dead center of a first piston and a second tooth aligned with top dead center of a second piston and the second plurality of teeth has a first tooth aligned with top dead center of the first piston and a top dead center of the second piston, wherein the first tooth of the first plurality of teeth and the second tooth of the second plurality of teeth has a first width and the second tooth of the first plurality of teeth and the first tooth of the second plurality of teeth have a second w

Assignees

• Polaris Inc

Inventors

• Blake Dallas J
• Barczak James A
• Hosaluk Lawrence J
• Hedlund Darren J
• Young Oliver J
• Reeves Matthew D
• Tharaldson Joseph D
• Dale Chad A
• Crain Stephen G
• Rhodes Trevor F

Classifications

• F02N3/02

  having pull-cords · CPC title

• F02D2041/0092

  Synchronisation of the cylinders at engine start · CPC title

• F02N19/005

  Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation · CPC title

• F02N2250/04

  Reverse rotation of the engine · CPC title

• F02N11/0837

  Environmental conditions thereof, e.g. traffic, weather or road conditions · CPC title