The First Tractors

A ________________  is a vehicle designed to deliver a high tractive effort, commonly
called the torque, at low speeds. 

The first petrol-powered tractor was built in _______________  by the Charter Gas
Engine 

 In 1840s a portable steam engine was __________________    .

The first petrol-powered tractor was built in 1889 by the _______________   .

  The experimental tractor built in 1892 used some traction engine components and had a _____________ petrol engine producing 20 horsepower.

The first successful tractor was a two-cylinder petrol-powered tractor built in 1903 in the __________________      . 

The first tractors with __________ wheels were introduced in 1908.

The first mass produced tractors were manufactured by _________   and were called the Fordson.

 By 1918 there were already about ____________   companies producing tractors in the US alone.

  In 1920s tractors with petrol-powered internal ____________ _______became the industry standard. 

Тяговое усилие-?

одноцилиндровый бензиновый двигатель

молотить-?

 A cylinder is a chamber in which combustion of fuel takes place. An engine contains minimum three cylinders and at present the number of cylinders can go up to 16. These cylinders are arranged in different configurations:
inline, V-type and ___________-type.

Valves are _________ to the shaft with the help of rocker-arm.

___________    are cylinders that go up and down and mix fuel and air before the ignition. 

 ____________, or gearbox, is one of the vital parts of a vehicle. Power is
delivered by ____________from the engine to the wheels, changing the torque
and the speed of the vehicle. ____________has multiple gears, and you can
switch between them as speed changes. It helps to provide maximum power
along with good fuel efficiency.

 ______________ help the vehicle to slow down or stop completely. ________ are di-
vided in various categories such as primary and secondary______. The driver
presses primary _________ by foot and secondary brakes are applied by the hand.
Another classification of brakes is on the basis of construction i.e. disc ___________
and drum ________. Most of new cars come equipped with disc ________, but
some budget versions may still have rear ___________of drum type. 

Air Filter-?

Clutch-?

axle-?

crankshaft -?

gear-?

hitch-?