These solvents are used in pressurized gas cylinders. The valves continue to operate, in order to pump cooling air through the cylinders. Technologies used include pneumatic activators, hydraulic cylinders, and electronic servomotors. The engines are turbocharged with three cylinders. The engine uses a mixture of compressed air and gasoline injected into the cylinders. Coolant passages were located between the cylinders. The suspension used as springs horizontal rubber cylinders. Some designs have two wheel cylinders. A regenerator would be placed in the pipe connecting the two cylinders. Pumping saline into the chambers of cylinders produces an erection. There were also problems with aileron control cylinders, electrical connectors, and engine compartment fires. It was used for boring the large-diameter cylinders on early steam engines. The old cylinders and pumps were discontinued. The vehicle was reported to have contained 60 litres of petrol, gas cylinders, and nails. By staging the expansion in multiple cylinders, variations of torque can be reduced.